Adam Savage's One Day Builds: Lathe Tailstock Repair!

[@tested]

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[@USS_Grey_Ghost]

I know I am now a week or more late but I want to say I feel sorry for the loss that you and the entire cast and crew of the Mythbusters have went through with the loss of Grant and I hope you all are doing ok. I also want to thank all of you from Mythbusters because I believe it was all of you that helped me Decide to go to college to become an archaeologist because of all the episodes you did on different historical myths and legends.

[@blizatrex]

A reissue of the Rasputin Mehcahand poster would be an awesome addition to my wall.

[@tobiaskaus20]

@@USS_Grey_Ghost b

[@tobiaskaus20]

@@USS_Grey_Ghost bb

[@SRFriso94]

_Remembers the last time Adam repaired his lathe_ _Nervous sweating_

[@trig]

I believe there is a "Nut" loose behind the controls.

[@zebjensen4251]

@@trig more like a nut who's using the controls.

[@patrickchambers5999]

Looks like Adam got the shaft this time.

[@philgallagher1]

The problem seems to be located between the lathe and Adam's shoes!

[@justinbegley2310]

Slightly slower wire speed and slightly higher amperage will stop the weld being so convex and better penetration. The rule is always go too hot and dial it back, not the other way. The old adage of “ If you can’t tie knots, tie lots” also doesn’t apply to welding, if the root weld isn’t good neither will the other five on top.

[@drfingaz889]

Watching Adam slowly go insane over these last 4 months is the most human thing I have ever seen. Thank you sir, for inviting us to your genius.

[@paulscrevane]

Dr Fingaz couldn't agree more. I've learned more in my life from Adam than for mission critical people in my life. and he literally has nooooo idea.

[@matthewhelton1725]

I've been using a lathe for 40+ of my 50+ years. Tip: Putting a short spring between the bottom of the tailstock and the retaining shoe will positively separate the locking shoe from the bottom of the bed when the tailstock shoe is released. Regarding alignment the tailstock with the spindle, you don't really want to use a coaxial indicator (they sag under their own weight). It is better to use a piece of bar stock 12-18" long which has been center drilled at both ends. 1. Place a dead center in the chuck or Spindle Taper (recut the dead center to 30 degrees), and a live center in the tail stock. drive the bar stock with a lathe dog. a. Turn a short length of the bar stock at the headstock end reading cross slide the scale only. b. Turn an identical length (again using the cross slide scale only) at the tailstock end. c. Use a micrometer to measure both diameters: They should be the same. 2. If they are not, you will need to adjust the tailstock. If the tailstock end is smaller than the headstock it will need to moved away from the front apron (X-), if it is larger than the headstock it will need to be moved toward the front of the apron (X+). 3. Repeat a., b. and c. until the diameters measure the same with the Micrometer. There are commercially available test bars which can be used with a test indicator mounted on the lathe carriage which essentially does the same thing. Tailstocks are easily adjustable in the X axis of a lathe, but they also wear in the Y axis (tool height axis): this is because the tailstock rides on the lathe bed and they wear against each other. Detecting this wear is a bit more difficult (and out of the scope of this discussion unless you are rebuilding the whole machine).

[@1pcfred]

While you're correct Adam is happy and that's all that really counts.

[@akren2482]

I learned something. Thanks for taking the time.

[@BaconbuttywithCheese]

Fantastic information, thanks for sharing.

[@Paragon643]

Thats exactly how i was taught to do it as well back in school. Takes a bit of time to get it dialed in perfectly but man will ye be happy by the end of it

[@darkwinter6028]

You can make one of those test bars also from a length of ground shafting or drill rod of an adequate diameter. You just have to be real careful when mounting it in the chuck to drill the center hole to get it dead-on zero runout; and also verify with a good micrometer, a test indicator on a height gauge, and a surface plate that the rod is a true cylinder.

[@g3heathen209]

Whoa, the grinder wheel scene was trippy.

[@Craftlngo]

Captain Picard: "Engage"

[@tested]

Norm having a bit of fun with the edit after he saw the footage was wonky.

[@normie26]

@@tested I did what?!?

[@woodendove]

@@tested Also, isn't that the same music Kyle Hill uses in his streams? I love it!

[@swilbaby]

@@tested Why did Adam turn the grinder on off three times to start it?

[@alexschultz4272]

One of my favorite things about these videos is watching Adam's genuine excitement about everything he does!

[@AHustleIsLikeASideOfFries]

You mean like the brass bolt and nut? I have a feeling he's going to include them in EVERY shot for months to come. And I'd do exactly the same!

[@ScarredRealist]

How do I know the video hasn't had many views yet? There's only one (other) person saying Adam should have ground the plating off the bolt off before welding!

[@oreubens]

Yep. Best tip for strong and nice looking welds... Always clean your surfaces prior to welding.

[@earlye]

One of the things I love about this channel is realizing that Adam could do _anything_ with the time he has on this Earth, and he chooses to do what I think I would do in his shoes: work in his shop, making things. The satisfaction he gets from it is evident on his face. I am happy he has had so much success and wish him as much as he can handle, more even, in the years to come.

[@missingdogmusic]

Right to repair at it's finest. The love and enthusiasm for your gear is highly addictive to me, Adam.

[@davidfitwe]

Color doesn't tell you it's Grade 8, it's the marks on the head that tell you.

[@brplatz]

Yup and the color looks like cad plating

[@christianzilker28]

@@brplatz cad is very poisonous and very seldom used in the last 40 years , normaly its zinc plated with yellow Cr6 treatment ( in German Zink gelb chromatiert Cr6 haltig) German electroplating craftsman here ;-) But you are right it could be cad you can add almost the exact treatment as with zinc

[@brplatz]

@@christianzilker28 Its extremely common, I work in aerospace/defense and all out mil-spec fasteners are cad-plated. But I agree, this fastener in this video is likely Zinc

[@Sarklord]

@@christianzilker28 Cr6 has ben banned in the electroplating industry in Spain for a number of years now. Carcinogenous stuff. The common practice now is regular zinc plating plus Cr3 + hydrogen peroxide. For decorative purposes, brass plating, niquel or other kinds of coatings are used depending on the final color to achieve. By the way, judging by the color of that bolt Adam is using, looks like Cr6 to me :-(

[@theoldman8877]

@@brplatz you are correct , I started to make the same statement about the head markings. Any other welding equipment would have given more strength, I would have used the stick welder myself.

[@avenged8fold1]

Love your videos Adam, but I'd like to point out the color of the bolt has nothing to do with the grade. The gold color in particular is just a yellow zinc anti-corrosion coating. What actually identifies an Imperial grade 8 bolt is the amount of dashes stamped on to the head of the bolt. The dashes will be either every 120 degrees (3 dashes total) or every 60 degrees (6 dashes total). The amount of dashes + two = bolt grade. So 3 lines is a standard grade 5 bolt, and 6 lines is a grade 8 bolt. Metric bolts are a bit different. A number will be stamped on the head, 5.8, 8.8, 10.9 or 12.9. The number before the decimal indicates the bolt grade, the number after the decimal indicates the percentage of its yield force it can endure without permanently deforming. So for example and grade 10.9 bolts can endure 1000N/mm^2 before it yields, and it can withstand 90% of that force without deforming permanently. A grade 8.8 bolt can handle 800N/mm^2 to yield, and 80% of that force with out deforming.

[@1pcfred]

The gold is called chromate conversion coating. It is there so the protective zinc coating does not oxidize. 5/8-11 is not an imperial thread. It is Unified National Coarse. Which is an international standard. The imperialists favor the Whitworth pattern. Communists use metric.

[@DavidLindes]

@@1pcfred what does communism (or capitalism, or socialism, or whatever) have to do with anything being discussed here?

[@1pcfred]

@@DavidLindes you brought up imperialists. I was just pointing out that you were attributing the wrong standard to the wrong ideology. Consider it a public service bright eyes.

[@DavidLindes]

Paul Frederick uhhh, I think you're mistaking me for the original poster? I did no such thing, and my question stands.

[@1pcfred]

@@DavidLindes then just fix it for yourself then. You're so clever.

[@c.j.1089]

Adam, when you're cutting a bolt on a bandsaw, it's always convenient to throw a nut on the other end to keep the cut straight. It saves a lot of time from having to face it off in a lathe to get a tangent line. I'm sure you probably use the same trick, but I'm always surprised how many people don't think of that.

[@rogermoeller7350]

Or better yet cut it off in the lathe

[@FireGuy90]

Love that he includes his mistakes and fixes. So much more helpful as a way for us to learn.

[@schwabnickolas]

I really appreciate well made objects. I have a 1990s Bridgestone bicycle and I admire its craftsmanship everyday.

[@libertyauto]

Sometimes the builds that Adam does are so far removed from anything I would likely ever do, but I still watch because I enjoy his company and like to learn how things work. Thanks for the videos.

[@TheRandomBrickGuy]

I'm think Adams love for his equipment and care for his craft, something Ive been following since I was a little kid, 100% made me into the Welder/general metalshop worker I am today.

[@nancypine9952]

If you like tools being taken apart and put back together, I recommend My Mechanics. He is Swiss, and extremely exacting in his requirements. If he doesn't like how a nut or bolt looks, we get the magical words, "I make a new one." He uses a lathe and a mill, plus polishing wheels and several other pieces of equipment. There's nothing more wonderful than seeing a rusted, worthless old piece of machinery transformed into something perfect. What's even more fun is when you see that same piece of machinery being used in other videos later on. No voice, just ambient sounds and some written explanations.

[@RicePudden]

These repair videos are my favorite! I love taking things apart and putting them back together.

[@deraldporter3828]

For some weird reason I enjoy seeing the Victorinox display and watching it dance along with the time lapse music was a real treat.

[@Atom-James]

I like how this was cut and edited together. Leaving in all the transitional bits. Well done.

[@SteveC86]

ODB is Adam just being my dad and letting me watch him work in his shop. Thanks Adam

[@donaldburkhard7932]

I really like your sense of humor, your attitude about mistakes, and thank you for all your content!😃

[@Rallion1]

"better, stronger, faster" is actually pretty accurate. It's faster in that it "holds fast"

[@patricksanders858]

How many know where the reference is from?

[@patricksanders858]

Is that a "six million dollar" lathe then?

[@JackastDrift]

i thought it was the Song from Daft Punk back in the days. But the Song is called "Harder, Better, Faster, Stronger" ^^

[@PrivatePhun]

David Ast glad you said daft punk and not kanye west

[@zrodger2296]

Love the Six Million Dollar Man reference! I grew up watching that show! Spoiler: Big Foot is a robot!

[@mylesedwards2990]

I love that a man who has so much experience and a tattoo of a ruler on his arm also gets so excited getting the right size tool on the first grab.

[@shipwrek8465]

I love seeing other people doing weird eccentric shit the same I do. When Adam points out to himself what bits go where! I do that ALL the time.

[@keithautry4602]

I say the same thing "that lives there"

[@markkaz7754]

Welcome to another fantastic episode of Mr. Adam Savage flexing his remarkable vocabulary

[@Arkkis27]

I didn't see this one so I will say it: That welding table wobble would have driven me crazy!! About from that, this comment section did great on pointing out things/small mistakes. Proud of you all

[@coreygaydos1]

Adam Ive been watching tested for years and the videos you've been posting lately is what I wish it had been forever, these are great vids. Hands on and "in the shop learning vids" keep of the good work.

[@samwise_the_tech3477]

You never actually fail if you learn something from it, everything is a learning experience :)

[@davestackpole7026]

Adam would make the best high school shop teacher of all time

[@kovallah]

Dear Adam, I already admired you in your time at Mythbusters and have now rediscovered you on your channel during lockdown and I have to say that I love your work and expertise as a builder. But I have to tell you, with a lot of love and respect, that your skills as a welder still have a long way to go, lollollollol, I'll give you a good review by welding that screw to the cap only with electrode!!!! It should have been perfect with the semi automatic, which is the one that does all the work!!!!! Whenever you want I give you some lessons, but you have to invite me to your cave. Keep working like this, greetings from The Basque Country.

[@123bbbooobbb]

I served my time on both the Bridgeport and a the same lathe thx Adam bringing so many memory’s back. Plz use these more thx

[@BlueNeonBeasty]

The editing and the music has really hit next level on this and the last few videos 💛

[@TheWindGinProject]

Adam; Thanks for the great example you make of being happy while you work.

[@BROON71]

Adam's welder sounds like an air raid siren on steroids..

[@prpunk187]

hahaha that's what I thought it was at first

[@RightOnJonCrane]

Ha!

[@DictiusTeNecare]

Haha :-D Nice J7 ;-)

[@Kami8705]

Air raid sirens are much louder, that's closer to a fire engine siren

[@FenderBenz]

I love it!

[@christopherjunkins]

wow, now THAT is what I call real work! I've had to haul heavy stuff at work before, not for anything like this, but yea... Adam you do makers proud, even if you have some mistakes along the way that teach you (and by proxy us) something. Thank you so much for content like this. Informative and entertaining as always :).

[@abelvillarreal6488]

Really enjoyed that build. So looking forward to getting back into my shop. A little post surgery healing and I think I'll be good to go. Thanks again Adam!

[@willie_roman]

Hey Adam - Future reference, you may want to grind off the coating from the bolt. Some of the coatings on bolts can produce very-very toxic fumes when heated to welding temperatures. It also has the added benefit of producing a stronger weld.

[@roswaytv9172]

Yeah adams defiantly a wizard, the exact t-handle pull was on point, hes magic.

[@johncrea9395]

Adam Since you went to so much effort to clean up the tailstock, I am surprised you didn't take the way wipers off and see if the felt in them needed replacing. Really helps keep the ways clean if the way wipers are in good shape John

[@paulscrevane]

5:00 my entire life I've loved taking things apart to see how they work. _soooo meditative._

[@BunnyKins1970]

The look of "Oh, yeah.... that's accurate" smugness with the tolerance at the end. Well justified!

[@bbsl1967]

With the grinder shaking the camera, it made for a beautiful effect. . . .

[@ImSiebren]

i love the editing!

[@bigmicproductions]

Thank the Tested team for that. Adam has a great team. Speaking of... The "a few minutes later" was classic. @16:32 😄

[@RightOnJonCrane]

So good when he was using the grinder!

[@matthewroepke4644]

Ah yeah, a royal live center! So drippy!!! Nice work Adam!

[@niclassimonsen8115]

Hello Adam! I am a big fan off mythbusters for manny years ago. Nice to finally meet you again. And see you still got the brain to do these amazing builds! Greetings from Niclas/ Denmark: 🙂

[@MikesFoggyIdea]

Since I don't own any power tools, watching the equipment maintenance is as interesting as the builds.

[@mrzon9344]

The lines on the top of the bolt head tell you it's a grade 8 not the 'gold' coating.

[@kevinvermeer9011]

The coating is just a zinc plating with chromate over top. Used to be yellow meant hexavalent chromate, but then we realized that's toxic, so now it's trivalent chromate with some yellow dye.

[@HomebrewHorsepower]

To be clear, on a standard bolt, the number of dash marks on the bolt head, plus 2, is the grade. 3 dashes (plus 2) is a grade 5. 6 dashes (plus 2) is a grade 8. The grade is an indication of the tensile strength of the fastener. The higher the grade, the higher the tensile strength.

[@HomebrewHorsepower]

That bolt is worth $6.

[@BurittoSandwich]

@@HomebrewHorsepower and $6 +2 (according to what's said above) means it's a grade 8 bolt

[@ouvuu]

True. However it is rare for a lower grade bolts to be plated that way

[@lambrettadude]

Hey Adam, as always I loved your video. I do not know if someone already said this but i missed something in the video, you assembled the tailstock and put it back on the machine after and what i did not see you do is make sure the tailstock is in the center. On the table you tightenet the bolts left and right but that does not mean it is in the same place as before anymore. Please make sure that it is back to center before you use it. Thank you again for the video's, Christiaan

[@KatElleice]

Love the editing in this one especially the little touch of the brushing going into the music at 11:46

[@Xbigmike17X]

15:12 when you tilt your head back to finish that drink as Adam starts the grinder only to return to this. quickly asking yourself "I drank what"

[@deeranfoxworthy6069]

I'm no expert, but on initial breaking loose of a screw, I was told you should never use the ball-end of a hex tool as you're more likely to round out a bolt that is potentially seized.

[@TilmonEdwards]

"I need to turn on my air compressor" I love using a voice assistant like Alexa or Google Home, and a couple smart outlets, for stuff like this.

[@davestambaugh7282]

It took me years to come to the conclusion that using the offset adjustment on the tail stock to eliminate a small amount of taper you end up just chasing your tail buy over correcting constantly. By using the leveling screws you can twist the bed ways slightly you have incredable control of taper. I learned this the hard way grinding long shafts with a tool post grinder. It makes it possable to average out any lack of straightness if the ways are worn.

[@Racingboom]

I swear, looking at these comments just makes me feel like Adam could’ve hired a professional to fix this and people still would’ve complained about how it was done.

[@bretstearns8083]

Hiring a pro would have been cheating and not learning! ;p

[@Absoill]

The only thing i'll complain about... is the welding, besides that he did better on everything compared to what i would do XD

[@810Metalworks]

The only thing I cringed at was the welding, but that’s just because I feel like a TIG weld would have been cleaner and had more penetration.

[@MJCPeters]

The grinder scene - High School shop class for many of us in the 70's.

[@Razikido]

I have been really looking forward to the One Day builds every week throughout lockdown, thank you so much. If I could ask one thing, please turn off the adverts throughout the video - they really break the flow of watching and I'm happy to watch a couple at the start and end - just every 8 minutes is even worse than any TV network I've seen

[@johnfenlon458]

LAUGHED SO HARD!!!! When you turned on Bench Grinder was shaking the camera. You need to replace both new Bench Grinding Wheels to get better smooth balance. I have one when I turn on the Bench grinder. It was a shaking move. I put a clamp on it and the desk got shaking all the time. I found the Bench Grinding Wheel was bad. Also I was in class Machine Technology at college. The teacher turned on a big Bench grinder and was shaking the Milling machine I was working on. I noticed shaking. I told the teacher that the Bench Grinding Wheel needed to be replaced. Never forget... You are Awesome.................... Cheer

[@jjoossee2000]

Have to say my Favorite part was when the grinder started shaking the camera.

[@TheJVoorhees83]

Love the videos, glad to see you trying to make a better effort to keep your eyes safe after that story about the steel in your eye from a previous video! It's worth the annoyance to have you keep making all these great vids with your crew!

[@tylerbest1269]

Adam there are many ways to align a tail-stock, yours seems to work fine for your but another method i would do it use a "test bar" and indicate that straight followed by taking text cuts on a scrap piece of steel and measuring each end to make sure its within the tolerance your happy with. for me its about 1-2 tenths .

[@travisallard3509]

Adam, I love watching these build videos. I envy your shop!

[@KipdoesStuff]

I used to think Adam had mad skillz, now I know he has just enough to get it done and not much else.

[@KG4JYS]

I think he's just used to working on much smaller stuff. Models and whatnot.

[@PatrickPoet]

You might call the three parts the headstock, the cross slide, and the tailstock. The headstock CAn have a chuck of one sort or another, but can also have a faceplate or a collet, for example. The tailstock can also have various things like reamers and drills and a dead center, for example.

[@VincentBrouillard]

MAN ! The psychedelic grinding part is just amazing! I always enjoy the editing you guys do, I'm still amazed by the king under the moutain music in a previous video. Keep up date good work!

[@rotaholik89]

Everything in his shop wobbles like crazy

[@martysmith2422]

Thats exceptional concenticity Adam!

[@phillipnewton8910]

Nothing as satisfying as grabbing the correct tool on the first try. 😀

[@bobs6888]

"This last weld is totally overkill" Bigger da gob, better da job!

[@pullinslack5600]

I was waiting to see the what brand of welder you had and was extremely happy you chose the right one

[@triple151621]

@17:50 Fully expected: "oh yeah, my welder doesn't work"

[@TheIlliniviking]

You posted this right as I finished the nut and bolt build, woo :)

[@JohnSmith-gm4fj]

Awesome Job good work Adam. Always proving there is more than one way to skin the cat!

[@SkydiveHake]

OMG please put some kind of oil between the bed and tailstock base. Another cool video Adam!

[@BASSicallyNUMB]

I was already prepared for 15:00 ... I love being unexpectedly prepared

[@matwashington2784]

In my best Beavis & Butthead voice "Heheh, he said he had munge on the end of his tail stock, heheh"

[@darrell1462]

Glad to see you got your welder fixed

[@Ritch-t-biscuit]

If that fails try a grade 1 sometimes in systems where there is a lot of vibration a lower grade bolt will actually work better. Love these one day builds!

[@FranciscoJEscalante]

Here I am watching at 10pm on a Saturday night and I don't even own a lathe.

[@OddModlin]

So cool to see the bandsaw (that I watched the build of) being used in a build. 😁

[@bricks1010]

I can't stop looking at the moving Swiss army knife display on the shelf behind Adam :-O

[@talyrath]

Adam: "First try! When does that ever happen?" Me: "About the third time you've tried to fix something."

[@sheariley1910]

Adam, I'm a huge fan and I've watched every Mythbusters episode ever made (probably several times). Anyways, I'd like to know if you've ever done any brazing and would like to see you do a build that features some brazing. Also, some tips and tricks for brazing sheet metal would be appreciated. Thanks for all the content during the pandemic. Its helped to lift my spirits.

[@dwgustaf]

I love your impression of the welder! :-)

[@bradleyshearrow3180]

Mr Savage- Welders have liners that can go bad over time/consumable part. You can get a replacement liner from your dealer. It is like a big ol spring. That might be causing some of the interrupts in your cable feed. (Liner for the cable up to the handle/trigger)

[@Verifraudreports]

Just noticed the scale tattoo on the forearm.. that was the first thing i did when i became a machinist 20yrs ago everyone made fun of me at the time.. thanks for proving i am a trend setter.

[@andygif290368]

Now if it was me i'd have just threaded the hole in collar and used a piece of thread bar instead of the bolt, so you can "easily" replace it next time the nut on the end chews up the thread.

[@kjcorder]

But how would you have threaded the hole in the collar?

[@paulwomack5866]

@@kjcorder well, a tap, or single point tool in a screw cutting lathe both seem viable options

[@DTeK]

0:37 Adam what is a tailstock ? ;)

[@sk4lman]

Anyone else thinks Adam has seen every episode of *_Hand Tool Rescue_* , twice? :)

[@mattjenkins7216]

Love the Six Million Dollar Man Reference.

[@buddyclem7328]

It reminded me of the Daft Punk song "Better Harder Faster Stronger".

[@TaterFarmer]

Me too🤣

[@sachdevariddhesh]

Thanks for the information Adam Savage

[@_TheDudeAbides_]

Adam: "Let me get some safety glasses" What? Am I still on the same KZbin channel? ;-)

[@jccatv901]

This video was probably recorded before and took longer to edit. They stockpile ODB vids.:)

[@matthewhoffman9242]

I was thinking hearing protection, my ears start ringing just using a air nozzle

[@mattlewandowski73]

@@matthewhoffman9242 Adams hearing may not quite be the same as ours.

[@axispowerdiesel]

Adam I can't believe you didnt grind off the yellow zinc before welding!

[@aldenhoot9967]

Yeah, doesn't that off-gas some pretty hazardous stuff when you weld it?

[@murraypearson2359]

@@aldenhoot9967 It does indeed. I was going to comment that the bolt definitely needs weld prep, as the coating emissions are toxic.

[@1pcfred]

@@aldenhoot9967 a little metal fume fever never hurt anyone. A lot on the other hand can be harmful. What's more concerning is what the coating does to your weld bead. I guess most of the zinc does just burn away though?

[@1pcfred]

@@murraypearson2359 that little bit of fumes won't hurt anyone. Welding it all day might. Then you just feel like you have the flu.

[@_TheDudeAbides_]

@@1pcfred Yeah, if you can't feel it, it can't be bad. ;-)

[@RickBoat]

To everyone complaining about the coating on the bolt... please calm down. If you watch the smoke the shop has good air flow away from Adam AND he welds something perhaps once a month perhaps less, and even then he welds coated bolts what once or twice a year? Sure, if the project called for 100 bolts or if he did one each day then the dose would get into toxic levels although if the air flow is good enough, even then it might not.

[@MrBoo997]

Adam the “wiggler” is actually a coaxial indicator

[@teslapiper]

Thanks I looked everywhere for that name

[@daa3417]

Pretty sure it shouldn’t be used for what he was showing, I’d bet it would sag under it’s own weight.

[@Simon-ui6db]

Well, just serviced my car, so rather than watch the FA cup final here in the UK, I will watch another Adam video. Just need my pizza and a beer and all sorted.

[@philgallagher1]

As AvE would say "a grinder and paint makes him the welder he ain't"!!

[@old_house_1906]

15:00 This part reminded me of Kubrick's visualisations from 2001- nice touch, mr Editor

[@rx323bug]

How good is the word munge! I've never heard it before, but i love it!

[@ghostwalker100]

the gold plating is a zinc plating to help reduce corrosion. i'm not a welder, but what i know of welding is you need to remove the coating or you contaminate the weld. the grade of bolt is usually stamped in the head and is not denoted by colour of bolt