Adam Savage Machines a Brass Bottle Cap!

[@tested]

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[@iddeegee]

Why didn't you make it solid from the beginning w/o any cuts and pressing 2 parts together in the vise? you could just cut the bottom part of the cap to match the length...

[@dbomber69]

You're supposed to tighten all 3 jaws on the chuck! Otherwise the holding force is one sided and unequal. And you should laser engrave the cap.

[@333Liger]

Nothing Wrong With Camera Fails Adam, The Main Thing Is Your Trying The Best You Can:3

[@Theexplorographer]

Hey Adam, I know you probably don't read this but... Threads on a bottle neck are called the neck finish, and are standardized under ASTM D2911 if you google that, you will learn something. Also, the sheer trauma that I go through from camera spills on this channel is unfathomable. Let's machine a better camera bracket eh?

[@Jackman781]

Question… is that a seiko watch?

[@GeneDascher]

Stuff like the camera falling behind the lathe and the unlocked tailstock is why I love these builds: they're so far from polished and Adam leaves in his mistakes!

[@mm9773]

Yeah, but - and I say this with no ill will - if he didn’t leave his mistakes in, the videos would be super short.

[@jonathanpuccetti9258]

So what exactly happened with that first piece? Something wasn't tightened, so it moved around during the drilling process?

[@Drakoman07]

@@jonathanpuccetti9258yeah, the tail stock that’s meant to stabilize the stationary drill bit came loose and bound up

[@TLZ]

As soon as Adam showed the bottle, i imagined him finishing this bottle cap and immediatly dropping and shattering the bottle.

[@chrthiel]

It would have been on brand for him

[@tested]

@@chrthiel #Truth

[@Lheticus]

NGL the thought did cross my mind too...

[@gerryg505]

I was expecting an errant elbow while it was next to him at the lathe.

[@harbl99]

Adam: "Long story short: now I have to learn glassblowing...and find room in the cave for the equipment."

[@ARDIZsq]

This is exactly the kind of weird and oddly specific thing that only Adam could provide. You love to see it.

[@arstd99]

Making a bottle cap could only be entertaining coming from Adam Savage! His next video is watching paint dry. I can't wait!

[@wayneswonderarium]

He showed us how to make paint dry back when he built The Shining maze 😂

[@tested]

@@wayneswonderarium #Truth

[@Throdrim]

Wait. This Old Tony would be perfect for the job 😂

[@Throdrim]

Or Clickspring in another style now that I think about it.

[@houdin654jeff]

25:32 I'll say it again as an amateur magician, Adam does a pretty good French drop sleight. Well done sir.

[@KevlarIlluminati]

he slowed it down and I STILL didn't see the hand off!

[@kevinalder3511]

I replayed that probably 20 times.

[@mikekmit6045]

I am by no means a machinist, but in my years as a maintenance tech, I've come across times when I needed to use a lathe, and cutting threads always seemed, to me, to be this side of alchemy. Kudos.

[@EasternTriad]

I know this is going to sound trivial to most, but I love that you included close-ups of drawers where materials and/ or tools are stored.

[@CindoBaby]

Idk but I think it's cuz we'd definitely be looking in them if we were standing there. It's nice to feel included.

[@draggonhedd]

Good to know adam also cannot deny the allure of random glass bottles. They really are commodity works of art.

[@mac.jenkin]

I replayed the slight of hand trick at the end on half speed and still am amazed with the misdirection. Bravo, Adam!

[@im1fadedRob]

The little "clink" of his ring hitting the bottle cap as he fakes palming it in that hand is soooo good.

[@cheekychappy1234]

I single stepped through the trick frame by frame and only on one frame is there even a sliver of a hint of the bottle cap in the lower hand.

[@L0nl3yb0y1]

i really appreciate that adam is willing to share his "failures" on camera. i go into most projects with a semi subconscious idea that i can get a perfect product in one go and i usually dont and feel terrible about messing up. seeing someone more experienced in making have a slip up of some kind in a very solid reminder that everyone makes mistakes.

[@shubinternet]

I think we have a new demerit badge! "Forgot to lock the tail stock" I love learning new things! Thanks, Adam!

[@PikkaBird]

Yes! Make it happen!

[@PBMS123]

he did it more than once, he does it when drilling too

[@the_cheese]

The conflict in this story was not provided by Adam vs the material or the process, as one would expect; it is the continued struggle of Adam vs the camera that provides tension today. Thanks for this cool little video!

[@canobenitez]

adam vs camera? what's the lore?

[@the_cheese]

Sometimes it seems as if the camera has a life of its own and defies Adam's attempts to control it.

[@aserta]

2:55 Adam, even if it's new, you should still check it for swarf. Remember, in the factory, they do check them to see if they run free, so in theory, it should be free-er than that. That's quite a bit of force there, even for a new one. Admittedly, the last new new check i got was 8 years ago, but i still don't remember having to haul on the handle quite like that. As they say, better to be safe than sorry. If you've never cut hardened metals, in theory, if it's a piece of swarf, it will be spat out at some point, but if you remember cutting something harder than brass, there's a chance and they can mess the scroll. All you have to do is take out the jaw bases, if it's in the scroll, you'll know it. I had a piece of brass wedged in one a three jaw and the whole scroll was golden by the time i got to it.

[@sithus1966]

He does like using the air around his chuck, and Mr. Pete222 will always tell you, never to do that because it blows junk into the chuck.

[@ssl3546]

Lol have you seen some of the Ebay import tooling that This Old Tony takes apart? They don't do diddly in the factory once the parts are made, just slap them together and put them in a cargo container. Even some high-end brands like Starrett need clean-up these days.

[@tmiklos4]

My grandfather was a machinist for 47 years at the Pittsburgh Screw & Bolt Corporation. After retirement he bought a South Bend lathe. He did all kinds of fun projects over the next 16 + years. He had no issues with turning wood on his metal lathe. I also have a friend who ran his own machine shop that had no issues with running mahogany classic speedboat stern light poles boreing the wire hole for me. He did it like you would rifling a gun.

[@rebeccafluffypace1766]

Omg! That little tool you used for information on the threads.. I have one from my late father and had no idea of what it was for! Mine is really old and still in it's original box from the 60s? So excited to see it in use. Now I know ❤

[@briansavage932]

I would have never thought to turn a bottle cap. This is oddly fascinating.

[@Kindyno]

Thank you for not cutting out your learning moments. As someone that doesn't do these sorts of things, but enjoys watching them, it's nice to see when experienced people make mistakes they "aren't proud of". Lets me know if I ever try any of this that I will make mistakes and that's ok.

[@RyanLRaben]

Beautiful bottle cap. I was hoping when we saw the knurling tools in the one shot that he was going to add knurling. Came out great though.

[@lermanct4486]

I was thinking it would be nice to see but honestly, as much as I love the look of knurling, it would not look good on this perticuar piece.

[@KurtJester42]

I had thoughts of "what kind of knurling is he going to do" even before I saw the box of knurling tools in the background.

[@Szlater]

Mightn’t knurling encourage over-tightening of the bottle cap?

[@hazbutler]

@@lermanct4486 It would look like a bad men's aftershave bottle top.

[@azgarogly]

@@Szlater It might, but when the sweet liquid in the bottle dead sticks the cap, Adam will regret not knurling it.

[@mattcastleman6708]

That slight of hand though 👌🏻👌🏻👌🏻

[@GeomancerHT]

I'm saving to get my dad a small lathe, thanks for this kind of videos, very inspiring!

[@KevinsChili]

I absolutely ADORE these kind of videos from Adam. They are a medicine for my soul. An international treasure. Thank you ❤

[@linusboden7050]

Love that you still make longer videos, hate that the yt algo only prefers anything shorter than a min today.. so braindead

[@nikolaceh]

I'm not quite sure how to describe what I feel for Adam. Respect, definitely. Admiration? To some extent. But most of all, strange as it may appear, it feels like love. For a person I've never met, probably never will, whom I've only seen on a screen. You are a treasure, Mr. Savage.

[@damongarner3792]

Thank you for including footage of the mistake. It is refreshing to see the self-own when it could have easily been edited out of "existence."

[@heyspookyboogie644]

This was the first of adams videos i've seen where i was more captivated by the filming than the thing he was making. Like the killer shot he got of the first cap drilling attempt, and then when he switched angles and his wrench / hammer were going through their pendulum thing for a while.

[@StefanGotteswinter]

Dont listen to people. The chuck SHOULD be tight. This is what gives repeatability. It means the jaws sit tight in their guides and the spiral also sits very tight in the body. Deburr and clean, yes absolutely, thats a good thing. It beeing tight? Absolutely a good thing.

[@petermoore9504]

Funny thing about lathes is sometimes you only get one mistake.

[@DerekHubbard]

Sometimes it's that you get one mistake per work piece. Sometimes one per tool. Sometimes one per hand.

[@talltale9760]

They really scare the shit out of me

[@PikkaBird]

@@DerekHubbard and to add a morbid angle: Sometimes just one, full stop.

[@DerekHubbard]

@@PikkaBird Truth. I knew someone who unfortunately made a "last" mistake.

[@MattOGormanSmith]

@@DerekHubbard Clearly you haven't seen the old training films where a person's entire body has been turned into a turkey ywizzler because they had long shirt sleeves, or were wearing a tie. edit. actually in those old films, they were all wearing ties of course (and smoking a pipe), but they were well tucked in

[@cowslaw]

"What a great bottle!" "I know, I set it aside!" True love.

[@Ittiz]

Your videos when you mill random SH like this are my favorite. Keep them coming.

[@peckenstein]

That little magic trick was so clean that even slowing the video down to .5 speed during the slo-mo I couldn't really see the cap switch hands. Well done!! And the cap looks great too! Much better than the original.

[@ThorPalsson]

Going to make an Apple Shrub tomorrow Thanks Adam! Had no idea this was a thing - Glad that it is so super easy to make

[@AleksandrMotsjonov]

I am so glad Adam sharing his failures. Thx.

[@aserta]

I made a couple out of aluminium for a CO2 system for a fish tank and i was majorly lazy in finding out what the pitch was, so i just chucked the bottom in the lathe with some leather and selected the closest by eye (which happened to match perfectly) and watched to see if the cutter met the peaks. While i had fizzy water bottles (reinforced, meant to take CO2 pressure from the get-go) i wish i could find pressure bottles, they're molded with buttress threads. Partly because i've never cut those on a lathe. Rambling aside, awesome bottle cap, matches the bottle's chic aesthetic perfectly.

[@DannyBeans]

I like putting these videos on while I work on chainmail - it kind of feels like I'm working alongside Adam. Appropriately enough, I'm making bottle sleeves today.

[@jasmeralia]

Synchronicity!

[@doriWyo]

He is a great teacher...of what NOT to forget!

[@djeeno]

I actually spent an entire weekend once researching threads to model a gasmask cap and a replacement bottlecap. it's a surprisingly complex area of engineering. beautiful work. also, my grandfather had a friend who owned a machine shop, they usd to call brass shavings "suicide glitter" due to if it got in your hair or clothes it could drive you to absolute madness

[@Jay22222]

Is it particularly worse than steel or most other materials? I would have thought the factors in determining the chip size/shape would contribute far more to how bad it could be than the material itself. If you manage to get a bucket of it dumped on you that is. (This is clearly generalised and oversimplified, not blanket black and white true)

[@djeeno]

@@Jay22222 from what i understand brass is more prone to produce microscopic chips due to its "grippiness" (as you can see it gripping the tools causing stuttering in the video). steel and alu tend to string instead. note: these are assumptions as I am not an engineer or machinist.

[@Jay22222]

@@djeeno Oh, I’m aware of the potential concerns of machining it, I just think equivalent particulate waste of most materials would be equally unpleasant to deal with in clothing and that machining operation is probably the more significant factor in determining the chips physical characteristics. Obviously highly influenced by one another but... Is brass any worse than an identical particulate made of a different material, even if brass has a propensity towards those characteristics I think the actual operation is probably more influential in determining those properties. You’re not going to get great big chips out of a surface grinder, regardless of material nor will you get a fine particulate from a shaper say, as extreme examples, regardless of material. Anything in between is going to be extremely unpleasant to have a ‘mishap’ with and my point is, I think the operation is a bigger factor in the significance of the ‘mishap’ Unless you were making some thoriated chopsticks with old weld rods or something, then I’d be more concerned about material properties.

[@grantclinch2496]

An old school machinist taught me, tighten the jacobs chuck in all 3 holes, it’s surprising how much better is grips

[@s.h.v.c2865]

I did see you added a the plastic seal to the cap, but I would be very hesitant to make a cap that would come into contact with acidic liquid (like shrub) out of brass, as many brass alloys contain lead (eg 360 free machining brass is 3% lead) that could leach out. Unless you specifically chose a low lead brass (which can still potentially contain lead), I would've gone with aluminium (which is what the original cap is made from haha). Probably isn't as big a deal as using a lead crystal (24% lead or more!) decanter for long term storage with constant contact, but still. The bare brass could also just get corroded and go green and nasty anyway, from direct contact and from fumes, completely seperately from any concern about lead.

[@robo5013]

I doubt the liquid will be in the bottle long enough for lead leach to be a concern. Lead in small amounts is only really dangerous to children's developing brains. In an adult you would have to ingest enormous amounts of lead for it to be harmful. Even moderate amounts of lead will possibly lead to erectile dysfunction in men. The amount that may come from that bottle cap will be so infinitesimally small that it will not harm adults, who would be the only ones drinking anything stored in it.

[@corrinastanley125]

I alway appreciate a one day build, thanks Adam and the Tested team.

[@rambysophistry1220]

So, three things I noticed, two from watching other shows about machining and one from just being a bit fly with chemistry. The first two are; that looks like it could use chamfers, and some knurling would look great and help grip. The second is that you want to get some kind of plastic liner, because acid and that brass are gonna play together like water and paper, and are gonna make whatever you store in that taste like metal and have copper salts, so lining the threads and inside with some ptfe would do wonders for both the taste of what you store and the safety of your beverages.

[@Stalport]

If you look at 25:43, you can see that he added a plastic insert that seals against the rim of the glass bottle so that no brass is exposed to whatever is stored inside

[@pbbbt7893]

I wish we got to see the part where he sourced and applied the plastic liner inside the cap.

[@treborrrrr]

@@pbbbt7893 Probably just stole it from the old bottle cap.

[@rambysophistry1220]

@@Stalport That is a insert at the very top of the cap, I am also concerned about the threads themselves. Really, just a coating of beeswax over the whole thing would be my go to thought, but that might be a little over kill and a ptfe liner for the threads and the inside would be the compromise.

[@captianmorgan7627]

@@rambysophistry1220 True, but the plastic cap should keep any liquid from leaking past to the threads .... assUme-ing that it seals tightly and nothing spills onto the threads when pouring.

[@jamiecruz4421]

Hey Adam! Have you thought about making a better camera support system? Seems like the camera falls at least a couple of times per episode. It's definitely something that is needed and it will also add to the overall betterment of the channel. Thanks!

[@Jack-sf5yp]

Fun ... just plain fun. Makers and Healers ... my favorite people in the whole world. Best 30-min of my day, today. Thank you, Adam & T-Family!!

[@vlmellody51]

This was a lot of fun to watch, Adam, and your new bottle cap is gorgeous!😍 Thanks for bringing us along for the ride. ❤

[@n0follow]

adam is ready to crash post nuclear wasteland's economy

[@frankrino]

Can't wait to challenge him to a game of Caravan

[@smashyrashy]

Not really if it takes half an hour for one

[@ktgame2640]

​@smashyrashy is a joke my guy

[@ThatPNWGuy2024]

@@smashyrashythat’s cut and edited down. More like 2-3 hours I’d say.

[@n0follow]

@@smashyrashy he was getting the crafting recipe, should be easier now

[@JonarRoman]

Any day I get to see Adam be a mad scientist with his lathe is a good day indeed.

[@TroubleChute]

Almost fell out my chair was not expecting Adam to whip out a magic trick 😂

[@peterfox2565]

Having very recently done almost the same thing making threaded plastic end caps for some spare flashlight battery tubes. It is very interesting to see how some one else attempts the same thing

[@ghostbanana271]

Fun fact - Lead free brass can contain up to 0.25% of lead

[@Szlater]

I was very disappointed by the lack of discussion of how he made that cap food-safe. He used solder and brass, both of which contain toxic metals and neither of which react well to acidic liquids (the shrubs he talks about in the beginning contain not only fruit juice but vinegar too). I see at the end that he has placed a piece of plastic in the top of the top, presumably to prevent liquid leakage, but not mention of this was made. I hope that anyone thinking of copying him does a little research of their own.

[@garthor]

@@Szlater Early on in the video he does say he's going to solder the top piece on, but later on in the video it looks like he actually does a pressure fit with the vice. The actual clip is only a second or so long of him doing the pressure fit. Not sure about the plastic insert though... seems like that doesn't get covered at all. Wonder if he'd considered the lead content of the brass at all... that'd be interesting. I'm always kindof interested in stuff like this, 'cause I see a lot of makers on youtube do food-related stuff, but then almost never say where they got their materials or anything about food safety... except for maybe when they are talking about food safety with resins (like peter brown/shoptime)

[@2testtest2]

​@@garthor He does indeed seem to press it on, but also keep an eye on the interior afterwards, and you can see the solder. Also the tell tale discoloration of the brass, indicating it was heated to a high temperature. I honestly don't understand why he didn't just make it a solid piece though. It shouldn't be that big of a deal to make an undercut at the end of the thread for the plastic seal piece to sit, and it's not like he took advantage of the two piece design, and put the seal in before pressing them together either.

[@kylemilford8758]

​@2testtest2 it is much more work, accurately drilling, setting precise stops for the threading, and then needing to be at an exact depth to fit the bottle. I would have preferred to see him tackle the challenges but I fully understand why he went this way instead

[@2testtest2]

@@kylemilford8758 I get your point, but think you might be overestimating the difficulty in doing it as a solid piece. He could have drilled and bored it to a very approximate, but exessive depth, just like he did, then come in with the grooving tool and made the undercut before threading. This is the standard way of turning internal threads, because it grants some leeway in when to stop the tool. He might not have the right tool for this, but if he cut the thread in reverse (starting inside the hole, and cutting outward) it would be even easier than what he actually did. Then after cutting the thread, he could face the piece to lentg, to suit the threads on the bottle. Finally part it off long, turn it around and cuck it back up for the rounded shape on top. No need for soldering or press fits. Thinking about it now, maybe he doesn't have an ID-grooving tool. Then this method would not be possible.

[@PropGuru702]

Beautiful French drop there Adam! I love that you're proficient in so many arts.. reminds me of myself!

[@Noeland]

Adam fires up the metal lathe and we all just love it!!

[@ScorpiusZA.]

I have looked for channels that do things like lathing. Watching Adam do it is just epic.

[@RobbBoswell]

The slight of hand was the added cap to the bottle.. 😂🤘🏼🇺🇲 nice

[@quirkyqwerssie]

"This cap, it offends me" Is the best way to start a project.

[@archibaldoctavion3851]

How many machinists cried in unison, "Don't remove a cutoff into your hand ffs!!!" Use a pencil for something that small...

[@knightofastora1324]

I've never even touched a lathe and I know better than to put my hand that close to such a dangerous machine while it's running lol

[@baremetaltechtv]

@@knightofastora1324 actually no i was more concerned with him going straight for a 1 inch center hole with no pilot hole, which can be done on a nice sturdy setup but I knew he was heading for trouble pretty much right away

[@sterlingcrawford1218]

if god had intended me to use a pencil he wouldn’t have given me so many spare fingers

[@saltech3444]

"I don't care, it's my metal lathe, I'll do what I liYAAAAAAAAAAAAAAAAAAAAAOWWWWWWW!!!!!"

[@dannysprogis8446]

Hey Adam, cool to watch. Why didn’t you leave a few mm of solid brass in your cutoff and machine the entire thing from one piece and avoid soldering two pieces together? Is it because the internal threading tool cant get close enough to the internal surface to work? I would have though for a bottle cap you wouldn’t need to thread all the way and you could use a piece of rubber to fill the gap and also create a watertight seal?

[@frojoe2004]

Adam does something embarrassing to which he feels shame. Instead of editing it out and pretending it never happened, he apologizes for us HAVING to witness it. 😂 What a legend!

[@patriottowing4973]

Hilarious 😅

[@possumgrits825]

I love that you show the mistakes. They are important learning moment's. Thank you.

[@5chr4pn3ll]

I was just waiting for Adam to finish the cap and accidentally drop the bottle. Ending up with a nice cap and no bottle for it, in a reversal of the starting position.

[@davidcahan]

That chuck was bouncing all over the place. Then he says (paraphrase}, 'oops, i forgot to lock the tail stock.' Adams ability to be a normal person without trying is underrated

[@timparsons3565]

That French Drop at the end. Well done, sir. I immediately thought of my dad, who passed away in 2020. Same trick, same rough hands, even the same big gold ring. That was an unexpected connection to him. :)

[@LincolnWorld]

I'm about 6 min in and I'm thinking the next video is probably going to be Adam making a new stand for his camera that keeps falling over. LOL I've been wanting to make some custom screw on lids in Fusion 360 for some glass bottles and 3D print them, but hadn't looked up how to figure out how to match the threads on existing bottles, so this worked out great. I have also be really loving the all the videos as the place that prints all the fake products for the movie biz.

[@fazer12779]

Adam, why didn't you machine the bottle cap out of one piece rather than two?

[@scottsweet13]

I came to the comments specifically to ask this.

[@ReverendTed]

I believe the issue is that the thread cutter has to run a bit beyond the end of the thread, so the internal cavity is deeper than it would need to be for the final bottle cap. Basically, if it were left like it was and cut as one piece, the bottle cap would be unnecessarily tall.

[@ErikBongers]

@@ReverendTed ...but after cutting the ring, he **removed** the threads on the ID and quite deep actually. So he hadn't intended to have the threads go all the way to the back anyway. I think, in hinesight, he probably could have made it in one piece by undercutting the back with a chisel-cut boring bar, prior to cutting the threads.

[@brolohalflemming7042]

@@scottsweet13 You were not alone! Adam's making a bottle cap. No, a threaded tube. Now capping the cap! So never having made my own bottle cap, or done much machining, was curious why? But it's also why I enjoy watching projects like this because I learn stuff. It's also why I want my own machine shop. Should I ever replicate Adam's feat and then get bored, I could make a different cap. Or learn to engrave and make one for each fruit concoction. Or make a 7-sided cap. I really want my own shop now!

[@gaerekxenos]

For these types of caps, you want a seal of a sort at the very back of the cap so it is air-tight in general or does't leak when flipped over. I'm not too sure exactly what his specs were or how he decided to add in the layer for the seal, but I imagine it was slipped in when he put the two halves of the cap together so it fit in snugly. Otherwise, you would need some tinkering around with shoving material in there, which is straight up awkward and liable to end up coming out easily since you've had to get it in there the first place -- or use another material such as a paint-on type of silicone or whatnot to serve as a seal

[@mikestone-w1q]

Safety point: if you plan to use the bottle for acidic mixtures like shrubs, I hope you used lead-free solder. The Romans learned the problems of mixing lead compounds and acids in drinking vessels the hard way. Lead-free solder is usually tin, which is safe.

[@Lily-cx1vo]

I love watching you make mistakes. Thank you for sharing that with us, it means a lot.

[@axel_is_gaming]

i love bottles and specific shaped bottles. I think all bottles that are not the standard bottle shape are beautiful.

[@saiyanprime]

Why do the cap in two parts? Why not just make it all one piece? There could be an obvious answer here, but I don't understand the reason for creating two parts and soldering them together versus creating one part. Regardless of my question, another enjoyable video. I find it funny that my morning routine is relaxing and drinking a cup of coffee while watching Adam make a bottle cap for 26 minutes.

[@wbfaulk]

My guess would be that he didn't feel comfortable that he could successfully cut a blind internal thread close enough to the top of the cap.

[@XtreeM_FaiL]

@@wbfaulk Threads can be cut inside-out too. All the experience Adam has, he is still a rookie on a lathe.

[@olavl8827]

@@XtreeM_FaiL Yes, one could also cut a thread relief before doing the thread itself.

[@90xxxxkat]

@@XtreeM_FaiL yes you turn the tool upside down and run it backwards

[@renebarger3667]

OMG I was worried that I was the only one bothered by this. Really more bothered that I couldn’t understand why.

[@PublicAtLarge]

I always enjoy seeing Adam recover from his missteps.

[@patrickdiehl6813]

Out of all my machine tools I love my lathe the best 👍 nice addition to a very nice bottle!

[@scottderyck1467]

machinist by trade... is what i usually say when someone asks "what do you do" I worked somewhere that molded plastic bottle caps for vitamins and such... bottle threads are a different animal. someone mentioned the acidity of fruit drinks against the brass and the related heavy metals that might bleed out, very true but it depends on exposure and exposure time. I did see a liner of some kind in the cap. more of an issue to me is temperature change... thermal expansion of copper and brass is pretty significant and if chilled on a glass bottle well it might not work out but it's relatively small about an inch so probably again no worries internal threading... I like to put an undercut at the bottom of the threads using an internal grooving tool that way you can keep it all in one piece no pressing or soldering. and yes I agree, knurling would definitely be a plus. I like big knurls, I cannot lie, baby need knurl.

[@randyvaughankn4wbh998]

if i remeber ,, bottle threads like light bulbs...are made with radius insert...not 60deg ..

[@Climber31Gaming]

Not a machinist by trade. I was expecting it to be one piece. I'm guessing he was trying to avoid crashing with the 2 part approach. An undercut seems like a good idea for a 1 piece approach. Would you cut the threads from the inside out to prevent crashing into the part?

[@scottderyck1467]

@@Climber31Gaming most lathes can be setup to drop the feed at a particular position so no, I would start outside and feed in, drop the feed when the threading tool passes into the previously undercut groove Another way is to use a 0-1” indicator to tell you when to manually drop the feed. It is possible to start on the inside but, I’m pretty sure you have to use a left hand threader and run the spindle backwards, sounds tricky

[@Climber31Gaming]

@@scottderyck1467 Oh, it makes a lot of sense to have that as a power feed feature. And you are totally right, changing the feed direction would change the thread direction. I need to work on rotational reference frames :)

[@scottderyck1467]

@@Climber31Gaming Thing is, there's a million ways to skin a project. Mr Savage has the courage to put his methods out here. Yes, one piece would be nice, yes knurls but Mr Savage does something a recently passed mentor of mine (dadhav here on youtube) did for me. He showed me how to fail up. Mr Savage does this. He shows us his failures where he learned and then allows us to learn from his failures. What a gift. I know I'm not alone in thinking this guy is an amazingly generous fellow

[@32bitDK]

Everything you do Adam are truely amazing to watch.

[@strawberryoes]

im not even a machinist and i was crying watching this 😅 my spouse yelling "debuuurrrrrr adam debur!”

[@caleb_dreams]

BRASS BOTTLE CAP, BABY! LET'S GO!!!

[@karelhoogendoorn]

To turn such a simple object into this... Beautiful!

[@scorpion2005765]

nice, but why 2 pieces instead of just 1? and you soldered it but didnt show that part!

[@sean.chiarot]

I was wondering that too.

[@joejust9269]

I think I saw them in Home Depot. And they are knurled for outdoor spicket covers😮

[@theBrightman]

That was an amazing clean french drop. Especially that close to the camera. Good job.

[@EvanCops]

5:56 😂 Im glad my camera isnt the only one who misbehaves 😅. Awesome video dude

[@RyanTaylor228]

Can we talk about how smooth that sleight of hand was. Nice cap Adam, no cap!

[@OhHeyTrevorFlowers]

If you want to avoid removing your work from the chuck and losing concentricity then it's dang handy to make a center height gauge that sits on your cross-slide. Inheritance Machining has a lovely build video of one.

[@MakeitZUPER]

I knew the tailstock wasn't locked as soon as I saw the endmill wobble, lol. Didn't you hear me yelling at you from the east coast? lol.

[@bigmouth0317ab]

So amazing! Truly a master craftsman/maker! I was imagining rounded flutes like a revolver cylinder though

[@SLAP1FACE]

watching Adam hold a rag that close to a lathe just reminds of that time he got a rag close to a lathe and almost lost a finger.

[@klehma]

There is no such thing as failure only the making of parts for future builds!

[@kennethelwell8574]

For all the "one-piece cap" folks: Feed away from the chuck, with the tool right-side-up but on the far-side of the bore, run the spindle in reverse. Set a carriage stop at the depth of the bore for the start of the threading cuts. No crashing required! the tool finishes the cut outside of the part. When the endmill came out I was sure Adam was going there, I know a cowboy boring operation when I see one... but as soon as the parting tool came out I knew the truth.

[@DieselTjuv]

That was surprisingly satisfying to watch, thanks!

[@danthemakerman]

Bespoke Bottle Cap! Love it!

[@troychristian6635]

I learned this along time ago from my best friends father. You can tighten the chuck much tighter if you tighten it at all three holes.

[@DanielLopez-up6os]

This is the Kind of Extra I Aspire to be able to have the Skill and time to do.

[@chriscmoor]

This one of Adam's rare videos where I was constantly suppressing the urge to yell at the screen. Machining that insert on the top was a completely unnecessary complication. Had it been me, I would have machined a mandrel with external thread. Machined the internal threads in the raw brass stock and parted it a little long. Screw the raw cap onto the mandrel with a drop of Lock Tite and finish the external machining with whatever decorations or flourishes desire. A little heat and it comes right off. The result is that the cap is a single piece, no silver solder or soft solder required. I suppose with it on a mandrel he could have also machined flutes into it or knurled it on the lathe.

[@didnotwantthis]

Same. I was like solder? Nooooo.

[@garthor]

Looks like he actually just press-fits them together, but as an armchair maker I think I agree... seems like you could have just made it one piece, instead of two pieces that had to fit together... Maybe it somehow made it easier to fit that plastic insert, that they didn't cover at all in the video?

[@LostButMakingGoodTime]

I love all of the levers and mechanical settings on that mill. Like starting up a steam engine. Or the Wonkamobile! 😅 I can hear Adam… “Hang on, I’m gonna really open her up this time, see what she can do!”

[@travislee9396]

Don’t you dare apologize for anything you do man. It’s nice just to watch you do your thing. I understand it’s just you being humble. But man I’ve been watching you for years and even your mistakes have a Bob Ross vibe. Just happy little accidents. Carry on good sir! 6:22

[@ichabodsescape1885]

I have a full shelf of stupid mistakes I look at when I make projects yet it still does not stop me from adding more.

[@daveboatman4024]

When I’m polishing something in my lathe, I use an old leather belt to polish with. It holds the polish well and I have 2 different sides to use, one the smooth tanned side the other is the coarse split side of the leather.

[@artanisH847]

i love the 100 overlays of labels at the beginning

[@AquaticHydra]

After watching yesterday's video. The "Not even close" when you go to cut the thread makes a lot of sense.

[@johnwjensen]

It's nice to see that even Adam Savage isn't afraid of doing things the wrong way a couple times. Lol.

[@bennyfactor]

It looks really nice! Kinda surprised Adam didn't use a knurling tool on the sides of the cap though.

[@OrcinusLaryngologist]

That’s what I was waiting for during this video! 😂

[@GrugTheJust]

I have to admit the only thin cleaner that the build was that sleight of hand at the end. I watched it at .25 speed, and still couldn't catch a fault. Bravo to both, caps on and off to you.

[@diegoparga9324]

I’ll always remember what my machining professor told me when he saw me trying to drill a one-inch hole on some steel. Everything starts small, a tree starts as a seed, a tall engineering student starts as a baby, a big hole starts as a 1/4 inch one.

[@babbagebrassworks4278]

I take a fine diamond hone to the two cutting edges of twists drill and put a tiny zero rake flat on them for brass drilling, then there is none of those screechy grab issues. I have a twist drill set modified just for brass and bronze.