/r/metalworking

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Your place to share metalworking projects, ask questions, and learn together!

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Welcome to /r/Metalworking, a place for hobbyists, students and professionals to discuss everything metal!


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  • Quality Content

    We want r/metalworking to be a source of high quality content related to metalworking. To achieve this we have some standards for submissions:

    All Submissons Should Have

    • An in depth explanation of the issue/problem

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    /r/metalworking

    678,929 Subscribers

    0

    I need to fill this

    I need to fill a hole that was drilled and tapped in the wrong spot. This is a rifle receiver (heat treated) and I’m not sure what the best way to fill this so it can be drilled and tapped in the correct location. It’s a 4.2mm hole drilled 9mm deep

    Just fill it with weld?

    Plug and weld?

    Other approach?

    2 Comments
    2024/04/16
    01:05 UTC

    1

    Seeking Patina paste receipt - to avoid runs that would occur with liquid patinas

    Seeking to patinize a bronze plaque with wording. It is 40" x30" and vertical. Need to apply patina in paste form to avoid runs that occur with brushed on patina. Meant Patina recipe not Receipt

    Thank you

    Douglas

    1 Comment
    2024/04/16
    00:44 UTC

    1

    Seeking Patina paste receipt - to avoid runs that would occur with liquid patinas

    Seeking to patinize a bronze plaque with wording. It is 40" x30" and vertical. Need to apply patina in paste form to avoid runs that occur with brushed on patina.

    Thank you

    Douglas

    1 Comment
    2024/04/16
    00:44 UTC

    0

    Arc marks

    How to not get arc marks on the face of a flange when welding the inside (stainless tig)

    It's happening when in breaking the arc

    2 Comments
    2024/04/15
    23:02 UTC

    5

    Chemically Etching Mild Steel Without Water?

    I'm doing a custom motorcycle and need to chemically etch an image into the gas tank and fenders. I have found a number of etching recipes (etchant), but they all use water. I really don't want to seed a bunch of rust into this steel so I am hoping somebody knows of a recipe that does not use water.

    • Best recipe found - Copper Sulfate, Sodium Chloride (kosher salt), and WATER. Copper sulfate is not soluble in acetone. I guess I could use this method and follow it up with a subtle amount of that stuff that converts rust to zinc oxide.
    • Self Etching Primer - I bought Rustoleum's self etch primer. I diligently cleaned bare steel with acetone, then sanded again. I didn't get a visible etch after I removed it with acetone.
    • Ferric Chloride + WATER
    • HCL (Hydrochloric acid) + WATER

    Any and all wisdom is welcome with much gratitude and humility.

    9 Comments
    2024/04/15
    21:06 UTC

    0

    1/4 #2 Rebar Galvanized

    Where Can I find long pieces of #2 rebar galvanized. Its going inside holes in wood stakes spaced 7ft apart. How would I go about connecting the rebar aswell. Thanks!

    12 Comments
    2024/04/15
    18:56 UTC

    14

    Pencil eraser cleans lightly oxidized aluminum?

    17 Comments
    2024/04/15
    18:52 UTC

    1

    Lathe Stands/Benches

    In lieu of paying the cost of a Grizzly lathe stand for a G0602Z, what do you guys recommend? Huge plus if it has storage underneath. I was eyeballing this, but I don't see any weight rating for the top - only the drawers: https://www.harborfreight.com/tool-storage-organization/workbenches/large/46-in-9-drawer-mobile-storage-cabinet-with-solid-wood-top-black-56613.html

    If I remember right, the machine is roughly 350 lb.

    5 Comments
    2024/04/15
    16:11 UTC

    2

    Looking at purchasing my first Band Saw - Thoughts on this used Craftsman 5x8?

    Seller posted it this for $200 with the following description:

    https://preview.redd.it/6xj7xd58mnuc1.jpg?width=960&format=pjpg&auto=webp&s=555039e5f94d9581b795c8bb19648f9c85d46704

    "Craftsman 5x8 horizontal/vertical bandsaw with cooling system. This has been an excellent saw. Saw sits on a stand I made for it with 4 castors. Only reason I am selling is because I bought a bigger one. Price is firm."

    Would this be a good option for a first band saw? Just doing hobby stuff right now, certainly can't justify price of a new saw, and have some space limitations in my shop. Anything to look out for on older/well used band saws (Wear items, end of life, etc.)?

    3 Comments
    2024/04/15
    14:34 UTC

    9

    What's this piece called?

    Can anyone help me with identifying what's this piece attached to the Kant twist clamp called? And where I could find one? Thanks in advance.

    11 Comments
    2024/04/15
    10:50 UTC

    14

    what did they painted exhaust manifolds with in 1980?

    so i'm sick and tired of rusty pipes and the only thing that helped somewhat was VHT flameproof ceramic spray paint.

    my question is, what is the non consumer, proffesional fix for high temp resistant paint?

    like, what does the militairy use for coating on their non-titanium exhaust parts on their fighter jet planes, what did LADA russia put on their exhausts in 1980. what is the most toxic, environmental unfriendly, but ultra effective exhaust paint.

    y.know, the shit google straight up isnt showing us.

    thanks in advance

    60 Comments
    2024/04/15
    09:17 UTC

    3

    how to get into welding with no experience?

    i started doing HVAC installations when i was in highschool (about 9 months now) and i still do on my off days. i’m currently working in commercial painting. i don’t mind it. it’s easy money but i wanna do something more for myself. definitely not a trade i’m gonna stick to forever. i’m about to turn 18 and i’m really interested into becoming a welder in the future, but i’m not too sure on how to start a career in the industry. even the guy that got me into HVAC said i should go to welding school.

    is a technical college/welding school worth saving up for? or should i buy a cheap stick welder and practice different techniques? any advice is appreciated

    16 Comments
    2024/04/14
    22:20 UTC

    1

    20 ton press tooling for frying pan

    Hello! Any suggestions on what to use for forming skillets with a shop press? 12 gauge mild steel of various sizes but need to make the tooling…

    I have seen people using a big disc and pressing into a ring of some sort but not sure exactly what is best. Anyone doing it and have some suggestions?

    1 Comment
    2024/04/14
    04:10 UTC

    68

    20’ gate 9’ tall

    First gate

    11 Comments
    2024/04/14
    08:47 UTC

    10

    What coating to withstand temps?

    19 Comments
    2024/04/14
    05:47 UTC

    8

    What really is "oil rubbed bronze"?

    We have a nice faucet, and over the years it became grungy with hard water scale and stuff. So I disassembled it and soaked it in vinegar and cleaned off all the grunge, and of course this also removed the "oil rubbed bronze" finish.

    So I bought some Jax Brown Darkener and that very nicely restored the finish. I think the darkener contains some mild acids... certainly no "oil".

    So... why is this finish called "oil rubbed"? There is apparently no oil involved?

    https://preview.redd.it/lal8sbz7gduc1.jpg?width=2080&format=pjpg&auto=webp&s=9d075ab69414e5f3b98cc1cb708356ca34df3785

    12 Comments
    2024/04/14
    04:22 UTC

    1

    Removing welding distortion?

    I have a battery rack base I welded:

    Top view

    It was rather "pringle shaped" before, but I used the Bendinator^TM to mostly fix that.

    Now it has a bit of a subtle bend along it's length which I'd like to remove to make it flat

    Questions:

    1. Should I try using the Bendinator^TM again? The jack is rated 8,000 lbs, the chain is 5/16 grade 43 (rated 18,000lbs), and the straps are Rhino tie-dows rated for 10,000lbs. I'm a bit worried about safety if something breaks. However, every single post I can find WRT using chains and a jack don't mention it being an issue at all. Even a video I found theirs just sorta popped apart.
      a. Should I try to use without the straps?
    2. Should I hit up my local metal fab place to see if they can bend it back?
    3. Should I try flame straightening? Seems like it might be difficult because of how long/gentle the curve is (total length is ~57cm). I do not have an acetylene torch, I was thinking of trying to heat with the TIG. However, I've never done flame straightening before.
    4 Comments
    2024/04/13
    19:31 UTC

    30

    Die making smooth threads??

    Hey guys, I'm trying to make external threads on a battery mount. I tested the existing on at 1/4x20 so that's what I used for this one. However, for whatever reason, the threads are just smooth, instead of being sharp how they usually are, so the nut just slides right down

    Any ideas???

    50 Comments
    2024/04/13
    19:07 UTC

    26

    Zinc range hood

    Mostly do woodworking, but I experimented with zinc for the first time and I think it came out pretty cool

    5 Comments
    2024/04/13
    15:54 UTC

    44

    i didn't know i needed two bending jigs but after i saw a guy building them i just had to build them too

    7 Comments
    2024/04/13
    10:52 UTC

    38

    Rate this welding done by a shop on my truck.

    Just wondering what professionals have to say about this. Looks sloppy too me but maybe I'm wrong, I have never welded in my life.

    95 Comments
    2024/04/13
    07:01 UTC

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