Making a bolt with double threads - DOES IT WORK? - Lost PLA metal casting - 3d print to solid metal

Using the lost PLA metal casting I will turn 3d prints into metal castings in my DIY backyard foundry. I started by printing the models on my 3d printer. I then coated them with a ceramic material. I then fired the shell in my kiln and then poured metal into the shell. This is similar to the lost wax casting process.
------- Affiliate links to items used in this video ------
Pyramid A1.1 3d printer amzn.to/3wfg2t3
The best polishing wheels ever amzn.to/2VjG2GK
Overture 3d printer filament amzn.to/2UqwwRC
The links above are affiliate links. This means that, at zero cost to you, I will earn an affiliate commission if you click through the link and finalize a purchase.
Alternative link to Pyramid 3d printer www.toautotool.com/collection...
Oleg Pevtsov's bolt video • Десятизаходная резьба ...
3d models www.thingiverse.com/thing:469... / www.thingiverse.com/thing:470...

[@robinson-foundry]

Hey guys! This one was a lot of fun to make. I hope you enjoy watching it. Have a good weekend! 🔥🍻

[@XXCoder]

Sigh can't wait for autocaptions. KZbin is so slow on those lately. Have a great weekend!

[@alfonzeenrojas1418]

Robinson Found made please brass knuckles my request

[@zumbazumba1]

Mr Robinson try using a metal mosquito mesh next time.It will add a lot of structure support.I use it to weld plastic parts together,i just run a soldering iron on it and it sinks inside the plastic.

[@andreipendle1778]

These were amazing castings, congrats!

[@lucajo16]

please do a stress test. I would really love to see this print finally have closer on weather the design would work or not.

[@fleegster2240]

These are probably the cleanest castings I've ever seen

[@navydad82]

Right?!

[@R.Lennartz]

That ceramic coating did an amazing job

[@TheMrDarius]

Yes

[@ThePandaAgenda]

Very fine sand

[@armsupwithlawrence]

Castingcouch would agree

[@NightRunner417]

Regular nut: "Ok I'm totally going this way." Double thread nut: "Yeah sorry, I'm just gonna have to stay on the fence with this one."

[@pvic6959]

direction fluid :P

[@NightRunner417]

@@pvic6959 Fluid dynamics.

[@rockstarproductions6377]

Its' like a bipolar nut.

[@annotten7413]

Finally, a nut that doesn’t need blinker fluid

[@NightRunner417]

@Muttanna S H lol

[@PrayingLotus]

This man’s voice implies he’s basically the son of the How it’s made narrator

[@justsadguy3153]

well kid let me give a useful knowledge there is something called voice changer that most of youtubers used

[@aw_dev]

@@judahdoan5196 Rest In Peace

[@jerrysouthside8597]

@@justsadguy3153 KZbin doesn’t have a voice changer my friend

[@justsadguy3153]

@@jerrysouthside8597 lol when I said they use YT to change voice there are something called editing tools.

[@rachele7398]

@@justsadguy3153 why do you think they use a voice changer?

[@kale991]

Wow your casting methods seem way better than most of the stuff you see in KZbin. It may be a lot of work but I think the results speak for themselves

[@Denamic]

The fact that you can see the layer lines clearly enough that it looks as if the metal was 3D printed directly just speaks of the incredible quality of the cast

[@Mistertbones]

I have to agree with you, the layer lines look cool. The weekend is always great, as I get to watch some of my favorite casters, such as you, BigStackD, ArtbyAdrock, and VOG, just to name a few. Another great casting.

[@robinson-foundry]

Thank you!

[@mariahmayers8869]

@@robinson-foundry Missed opportunity to call it the Impossibolt

[@J.DeLaPoer]

Nicely done! A double-threaded bolt is one of those random things I always wondered about as a kid, but haven't given a thought to in about 20 years and never expected to actually see. As a sidenote, it's not a real project unless you're borrowing various kitchen items.

[@fukkitful]

After years of watching "How It's Made," Ive never seen someone wrap wire around a casting. Yet it seems like a great idea.

[@SireSquish]

Capturing the 3D printing filament lines means that your casting method is absolutely on point.

[@GetMurcD]

I love that you can still see the 3d printer lines in the casting. That liquid ceramic stuff works great.

[@chiptune_]

I used to work at an investment casting titanium foundry - we had to wear gloves pouring the wax patterns, cause the oil from our fingerprints would show up in the metal casting afterwards. They can pick up crazy details

[@alexia3552]

11:12 That is incredibly satisfying. You could sell this as a fidget device

[@ToxicFruit]

As an aircraft mechanic I have a problem with this concept. I love that it actually functions to some degree, but it doesn't actually perform the function as a bolt as far as I can tell. In effect the nut kind of "falls" through the threads, and it doesn't appear to be capable of actually holding anything together, not to mention the inherent sensitivity to vibration. Practical problems aside, fantastic work!

[@prismatic9804]

Yep. Looks great, doesn't work

[@ericlewis3444]

lol it's totally just a fun theory and a great toy. The uni-directional nuts could hold a bite, but would eventually snap, this is true.

[@BillyViBritannia]

Maybe as a pair they are useless but you could in theory save material by making those parts and pairing them with one directional counterparts of either orientation. As a bonus the parts would always fit and you wouldn't have to worry about picking the right pair.

[@TheBadAssNinjaDude]

if you look carefully, he makes 3 Nuts, one that screws clockwise, one that screws counterclockwise, and a third that screws in either direction. the former two would work just as well as a normal bolt and nut.

[@ToxicFruit]

@@TheBadAssNinjaDude Good point, I missed the two unidirectional nuts. Unfortunately it still ends up with the same effect of either being a conventional nut or not holding things together. There is the perk of being able to use left hand or right hand thread nuts though!

[@Villanite]

As someone who knows nothing about this stuff... I actually have always liked layer lines. I think the texture they add is pleasant.

[@ovrsurge4689]

I agree that layer lines add a nice texture to a lot of print related stuff, but the layer lines are weak points structurally in 3d printed structures. Parts often break along the layers like the grain of wood. Not really an issue with a cast like this because those layer lines are just surface textures and not part of the structure. I've seen some stuff where people experiment with different 3d printing methods designed to enhance structural strength with angled layers and such.

[@Robert_McGarry_Poems]

@@ovrsurge4689 Slumping is an art form where they purposefully create layers from mostly glass, but I have seen metal done that way too.

[@ovrsurge4689]

@@Robert_McGarry_Poems You learn something new every day. I've seen slumped glass before as a kid but never knew it had a name.

[@PianistifiedForYT]

@@Robert_McGarry_Poems wow...

[@MadHeadzOz]

@@ovrsurge4689 I've observed that a lot of tools seem to be taken up across different disciplines/trades. Almost as if a great new tool for one trade has been invented but in reality that tool is old new for the trade it came from. It seems obvious once we know. I find the slumping comment interesting for similar reasons. Having extensive experience in construction, 10 years or so in various types of concrete. The slump of the concrete was always critical to the work and result yet I'd not considered the art of mastering it. It was just something we did but the more technical the job the more critical every element of it became. Not many things I appreciate more than the mastery of any skill or craft. Definitely something to always aspire to. Always something to learn, often not from where we'd expect.

[@onewa712]

"I'll just throw out a scene of me using my wife's Pyrex so she gets mad" 😆

[@d4v3tm]

we know who slept on the couch that night

[@ajeje1996]

What a power play

[@svtcobra8542]

@@d4v3tm the couch is our friend🙃

[@EddieOtool]

Quite the saddistic. A gentle kind thereof.

[@johnadler6987]

I was about to say this lmao.

[@tantilist1449]

I like how he explains what he does the same way every time. He tells us what suspendaslurry is every time I love it

[@Drakonus_]

2:20 "Metal would rise up through each nut." I don't know why but, this line made me laugh so hard.

[@bonnistonecircle2263]

that was kinda funny...lol

[@senrabnaneek]

Metal is stored in the nuts

[@swordzanderson5352]

@@senrabnaneek This man has nuts of steel

[@DGK-kv6ky]

I see he hasn’t uploaded since this video. His wife prolly seen him using the Pyrex. RIP man :(

[@TheBrickagon]

Rip :((

[@Agnes.Nutter]

? At the time of your comment he had uploaded two videos since this one

[@DarkR3ignlol]

All fun and games until the wife actually finds out.

[@jasonhawks2225]

@@Agnes.Nutter *WHOOSH*

[@MrGivmedew]

LOL we only own Pyrex because of me lol… it was a present for my wife before we married 10 years ago. I bought 4 of every single size and 8 of every single top! Since then I’ve gone as far as purchasing extra fakes of certain sizes and tops and made sure my wife understood that fakes DO NOT get used on a stove or in an oven!

[@zacharyfreese7758]

This guy reminds me of Grant Thompson so much! I miss Grant.

[@tommygallagher5747]

Same :(

[@casywalter7816]

Same though

[@pauleskridge7209]

Thats funny he does sound like the king of random

[@awwomegrasscalledalfalfa6437]

:(

[@nixcrits6480]

I still remember when it happened. He was probably my favorite KZbinrs and it was one of the only times in the past few years that I've cried, rest in peace TKoR

[@doesntmatter3068]

The way you made these is the same way golf club heads are made. But with wax instead of plastic. Very interesting!!

[@micmillist2588]

Forget Fidget Spinners. This bolt could be played with for hours. Genius!

[@coastaku1954]

Watching the nuts effortlessly slip down the threads is absolutely mesmerizing

[@PeteKay]

nut watching usually is mate :)

[@Godric_71]

It's a toy for the man who has everything. 😎🏍💨👍

[@coastaku1954]

@@Godric_71 Now that is a sales pitch

[@EliosMoonElios]

Low friction, hardly get any surface contact, but also that make it pretty must useless, a gimmick.

[@mcdanjff]

Same for me, I've never seen this before

[@Verlisify]

Thank you, KZbin Algorithm. Finally gave me a really cool channel

[@pvic6959]

this guys got the best molten metal pour ive seen on youtube. this guy is _skilled_

[@patrickfaust8104]

Same here 😁

[@chrisakaschulbus4903]

yet any 30 second shit with a cute animal will get sooo many more views. pretty much no effort except for holding a smartphone

[@AmaroqStarwind]

How do we always end up in the same place?

[@zwingler]

Dog Woof woof

[@rdoggo9801]

is fascinating how the 3d printer layer lines are capture in the metal casting. Just to proof how awesome of a casting job it was. And the layers definitely adds character to the final product

[@SaltineChips]

"This scene is for my wife, it drives her crazy when I use her Pyrex for my projects." My, aren't you brave.

[@jaymethodus3421]

Pretty sure he meant that in a different way lol

[@brnmnr59]

The layer lines look cool on this one. It’s like dragon scales.

[@strongme80]

I was actually thinking about that!

[@LucasFreitas7]

i don't even "see" the layer lines. what are they?

[@brnmnr59]

They’re the lines from the printing process. If you don’t paint, fill them in or sand everything smooth, you can still see them after the pouring. If you can zoom in on the. Lack mold or the bronze finished piece you can see them.

[@KrakenCasting]

Those turned out gorgeous! I love when you can see print lines on a casting. It really shows how detailed a casting is.

[@11magic1man11]

The layer lines on the finished project just shows how good you are when you can capture something that small through the entire project.

[@_Highxway]

I think print lines r great details. it shows how detailed metal casting truly is

[@DJ-sn2wn]

At first I was confused why there would be layer lines in a metal casting then I remembered you casted it from the 3d printed model. That's a damn good cast!

[@arthasmenethil2201]

When I saw that kind of thread on a bolt I wondered "What if a nut has it?" Now I know, thanks.

[@1dayinhell]

the sound of the metal nuts and screws is satisfying

[@davidcurry5306]

That metallic "SHINNNNG!" 10/10

[@Khronosian]

Absolutely amazing! Might I suggest, in future, using vibration during the ceramic dipping, perhaps on future models with fine details? Applying a "neck massager" to that sprue funnel would certainly dislodge any errant air bubbles Source: Former foundryman

[@MurderWho]

Ah, I see, giving him another way to use his wife's things!

[@aryaaswale7316]

Lolz

[@charlz-darvin]

@@MurderWho LOL, you made me laugh loud

[@fancyfox5847]

Or maybe she could get one of those paint shaking machines

[@youvebeenspooked]

@@fancyfox5847 u shud see wat my wief duz w a saws all bruh

[@Joe_Mama_7]

When you accidentally screw in the bolt in the wrong hole… And then it just keeps tightening as you try to loosen it

[@Creature0022]

Or you screw it in the right hole and it keeps loosening at you try to tighten it

[@Kevin-id5hx]

Ya I dont get the point this thing is completely worthless

[@MrWhateva10]

@@Kevin-id5hx Correct. It's a novelty item, but it's still awesome. Bit like saying music is worthless because it can't fasten lumber effectively.

[@AsherBarkin]

If you put one end on a swivel it can be used for a really nice strut type of thing

[@trejkaz]

@@MrWhateva10 It's more like making a bolt out of chocolate and then saying that it's worthless because it can't fasten lumber effectively.

[@Ethercloud]

Very impressed how clean the detail came out of the mold.

[@normanbuchanan9710]

I must say that is one of the coolest videos I've ever seen, double threaded bolts are somethings I've never thought about

[@djpenner34]

Props to you! I think you're the first person I've seen actually give Oleg the credit he deserves! 👏

[@supertramp6011]

Perfect for those who missed the ‘ righty tighty,lefty loosey’ class. Very impressive project,thanks for posting this video.

[@sanjayjain1962]

I have never seen such innovative experimental casting video. Wonderful.

[@Boop__Doop]

Finally an answer for the question i have been asking myself for a long time

[@meredithv3168]

This was one of the absolute coolest videos I've seen in a long time. An awesome project in and of itself, amazing craftsmanship, well detailed and explained. This sole video has sold me on your work and your channel. Absolutely magnificent stuff, well well done.

[@robinson-foundry]

Thank you! I appreciate it!

[@johnnycage8952]

@@robinson-foundry Will you be selling these online?

[@intellectualiconoclasm3264]

I have to say that it warms my heart when someone gives a proper attribution to someone for their creation. Well done and good on you.

[@robertjohnson5227]

Definitely the first time I ever heard of a dual threaded bolt Thanks they are amazing

[@pjbscript]

Just discovering these vids in 2023! Really captivating, and reminded me of shop class in junior high where I had a somewhat visionary teacher that hooked us all in. Thanks!

[@ianian4162]

They're so...beautiful. I never imagined that something like this might turn out looking like a work of art.

[@michal_king478]

man that looks amazing. The method for the molds is by far the best Ive ever seen. I love how it retained so much detail that the layer lines were visible. Looks totally like it was printed with metal

[@Eroc556]

That is the coolest thing Ive seen man! The detail in those castings blew me away! Thanks for taking us along on these projects!

[@AmaroqStarwind]

For future castings, you should either de-gas the slurry in a vacuum chamber, or squish the bubbles away in a pressure pot. Using ultrasonic vibrations might also help to really get the slurry into every last nook and cranny and help coat the part uniformly. Oh, and dehydrating your filament would be a good idea too, in case it has absorbed any water while in storage.

[@DONKINDONUTS]

The way he talks and the cadence he speaks in is so consistent it almost sounds like text-to-speak.

[@jeffreygrose9971]

The layer lines on the metal look absolutely insane!!! I love this project and the detail of these castings are far beyond what I’ve ever thought was possible

[@stevencooper2464]

You, sir, are a creative genius, and I am very thankful you're not also a mad scientist. Excellent presentation, and work!

[@corystowell123]

I like the layer lines! It almost has a machined or brushed look.. great video!

[@rahulpagariya1]

9:53 most loveliest gesture I've seen in a while.

[@SomeoneCommenting]

8:00 Don't you love how that amazing pure bright yellow looks to the camera?

[@usernotseen4911]

the forbidden egg

[@arthurmarshall703]

Unbelievably satisfying

[@wuzi7049]

those things glide! it's so satisfying

[@andreipendle1778]

These castings have such amazing fidelity, I'm blown away! Keep them coming man.

[@magnussorensen2565]

When I saw the movement at 11:40. I thought it would be cool to use that to create a vice with double moving chucks.

[@tonyravioli1982]

It would, not sure it would be that useful though.

[@Martink9191]

Thets why right and left hand thread are made....

[@jesteronetime]

kzbin.info/www/bejne/h3PIgJp9qcSijbc

[@LockDock666]

you could make a vice like this, but since each jaw would always stay on it's according half of the main shaft, it makes no sense to make the shaft double-side threaded. just do one half of it left-sided and the other half right-sided.

[@arenio]

beautiful casting work

[@zzzires5045]

Always a win when the kettles already boiling in ambient ;)

[@soorajmz]

I'm not even into any of this but I enjoyed every second of this video, and I must appreciate your narration as well, good job and all the best

[@Ryansanders80]

"What kind of bolt doesn't have something to hold on to?" *carriage bolt enters chat*

[@Critical_Stinking]

Yeah but they have the square section at the top of the shank that bites

[@rogercoulombe3613]

@@Critical_Stinking Bites in theory. unreliable in practice.

[@Ryansanders80]

@@Critical_Stinking yeah, when i was little I was always so confused, then I worked with them

[@matthewmitchell6001]

Hahaha, classic carriage bolt punchline

[@harrymu148]

well yes but actually no but then in practice, yes but on paper, no.

[@darrenstettner5381]

I think the layer lines are cool. I’m impressed they were visible in the casting.

[@albind8622]

Those screws are really cool! Your casting is amazing!

[@baylinkdashyt]

I love how you've read your audience: it is not necessary to say "don't try this at home, you might set *everything* on fire, including yourself". :-)

[@sephirothbahamut245]

Ambient temperature: 100+ degrees Me: "What the fuck?" Him: "fahrenheit" Me: "Ahhhhh ok"

[@sawyerstephens8251]

That’s still really hot though

[@jasonjr2500]

@@sawyerstephens8251 not around the south thats nothing

[@DrB1900]

@@jasonjr2500 Yeah, now if it is actually 100 C outside, then you'll get Alabama's attention. :)

[@paulweston8184]

@@DrB1900 110 F in Arizona. Can cook an egg on the asphalt but not hot enough to boil water.

[@baconapo3990]

@@paulweston8184 no shit

[@kencarp57]

This vid popped up in my feed. It’s easily the COOLEST one I’ve seen in quite some time, and it earned you a new sub. Well done!

[@allenmoore5211]

Nice work. I took Metal shop in High School and was able to do a few casting projects but takes it to new level.

[@ProtoPropski]

I know the name's already set, but these babies look like Dragon Scales, so I think my pet name for them are Dragon Bolts

[@TacticalDimples]

They look like pineapples for me so I’ll name them pineapple threads.

[@localdude2979]

@@TacticalDimples yeah Pineple Threads sounds legit

[@patrickancona1193]

I’m going with worthless waste of time & materials bolt

[@pajolee6918]

@@patrickancona1193 Funny, that's the name I was going to pick for you! 🤔

[@rossclutterbuck1060]

Pineapple Dragons or Dragon Pineapples

[@peteragurkis3590]

Wow. I never would've believed you could cast something that finely with insanely minimal hand work as far as casting goes. Great job dude.also impressed that the tolerance on each cast was so perfect that even the different shrinkage rates between the two metals didn't matter

[@zacksrandomprojects9698]

We have these at work. We call it a 'levelwind'. It is about 6' long and 3" in diameter. Its mounted on a trailer. Instead of a nut on it there is a round pulley on it. A rope mounted on a reel goes through the pulley and we use the rope to pull in overhead powerlines from pole to pole. The pulley goes back and forth and keeps the rope evenly wound up on the reel. The slots criss crossing each other are razor sharp

[@clovemao329]

never knew metal crafting can be so cool

[@billyp.3128]

When you make casts so clean that even the layers from the 3-D printed plastic show up in the end result! Amazing job

[@RevengeAvenger]

I absolutely love the layer lines in the castings. It adds a lot of depth and a rustic quality. Really awesome channel! 👍

[@bostonstock3315]

incredible work, incredible artistry! incredible!

[@mwaqaspro]

A lot of work for just one video. Really Nice Work.

[@yngveellingsen3471]

This is probably the coolest casting video I've ever seen. Great work!

[@vasumanthnarisetty1608]

"this scene is for my wife" Yes king, cast away 😭♥️

[@AutoBodyEverything]

I seen two of your bi directional nuts n bolts, very gratifying to watch and pleasing. I love the craftsmanship.

[@ProMediaLLC]

Absolutely fascinating. Well done!

[@erhon5]

That ceramic shell stuff is really interesting and that looks like a really cool project!

[@LOKSTED]

So this is how my grandparent's way to school is uphill both ways

[@benjaminspencerrivera5973]

I love your "how its made" style production and voice over. Got yourself a subscriber.

[@LucaBlightOfHighland]

They would make great for decorating a nice office desk, good job.

[@apocalypticbean]

this is amazing. Love seeing the whole metal casting process.

[@immolationangel4124]

I accidently made one of these on a CNC one day when there was a M04 in my program's thread finish pass instead of an M03. (M03 is spindle forward, M04 is spindle reverse)

[@ricomock2]

Programming threading cycles manually? Why not just run a threading canned cycle and designate a spring pass to finish up?

[@plumbherhub1664]

Yep I just use my old pipe threader hand crank and old engine oils. Aint no cnc or what have you. Solder and taps and dies

[@immolationangel4124]

@@ricomock2 We use G32s for threading in 95% of our programs, it has its useful quirks for our applications. We have a separate, optional rethread for taking a finish pass which is ordinarily block deleted. It was in the optional rethread where the error was. I'm neither the programmer, nor do I even know if you can use a canned cycle for a g32, I've never seen it done. Our CAD software writes it out longhand, which, as far as I know, is the only way to use a G32. I may just be in an absolute paradise of blissful ignorance though.

[@ColinBache]

Just amazing! Love your work!!!

[@jdmccorful]

Clever work and wonderful skill!Enjoyed watching.

[@Actinuon]

Wow, I've never seen the ceramic process before. That's crazy awesome!

[@goonymiami]

That's a nice $2000 fidget! You are very meticulous, I really enjoyed this video.

[@therealxtagon]

I agree that the layer lines add to the coolness. It looks almost like brushed metal but perfectly uniform

[@Laymans-terms]

WoW you're a real Artisan, maybe I didn't catch it, I didn't catch I don't think you mentioned how many hours it took, seeing how good it ended up must have been very satisfying. I agree about the layer lines, it just adds to the detail and texture, good choice to leave them.

[@r7kelley553]

The layer lines in the threads are one of my favorite parts.

[@calvinpitts8186]

This airline pilot found this video to be utterly awesome. KUDOS.

[@simplyed9482]

All your work is flawless and thoroughly enjoyable bro

[@benzaryaputra395]

I thought they were made by cnc, i’ve never seen a homemade casting as smooth as this one

[@charliebaker1427]

Right most dudes on youtube use sand and foam this guy made ceramic molds

[@maxxskye8116]

I'm irrationally offended by this and now feel the need to do this in a manual lathe for the pure spite

[@namolokaman2393]

Awesome channel + nice cinematography, and interesting narration / "storytelling". Note: I couldn't help but notice that you have seemingly all the casting gear, _except the proper shoes!_ Vans offer ZERO protection against a stray drop of molten metal. If that crucible were to slip, you would not like it.

[@senrabnaneek]

Luckily the heat would melt all the nerve endings first so he wouldn't feel a thing

[@takingtimeaway]

You did a fine job sir. That is some clean work 👌

[@TomsChevelle]

Wow... love the video, you are a craftsman!