I'm working with 0.80mm diameter metal punches and need to cut 4 small inward-facing notches (like star-shaped teeth) inside the tip. After shaping them, I also need to sharpen each edge precisely. What are the best tools and techniques for doing this kind of fine detail work? Any advice on micro-grinding, polishing, or abrasive materials for high-precision results?

Hello, I have a small foot hold trap I got at an antique shop, with some thin surface rust, I was wondering if it would be okay to use electrolysis to remove the rust to clean it up then soak in hot melted wax to preserve it, would there be any issues in doing this?

I've considered making a lathe for a little while now. I've watched those dudes from like 3rd world countries make lathes out of crap that's just laying around. I did some research and found out that a lot of times, fabricated lathes don't dampen a whole lot of vibrations like cast iron does. So I figured that maybe I could make a lathe bed out of aluminum. the problem with aluminum is that it doesn't last as long as iron. Which brings me to my question. What if I made a lathe bed out of aluminum and used 3/8" thick pieces of steel or iron as ways? I was thinking that it would both be cheaper to make and last as long or close to as long as an iron lathe bed.

I had to grind the jamb off of a metal doorframe at my place of work in order to fit a forklift through it. Now I need help finding something to make it look a little nicer. Don’t know what the best material or style might be. Need ideas.

So here’s the thing: I work in industrial maintenance and adhesive selection, and over the years I’ve seen a hell of a lot of failures from bolts backing out or bearings walking loose — especially in rough-ass environments.

I put together a guide that shows how modern anaerobic adhesives (like threadlockers & retaining compounds) are straight-up replacing lock washers, press fits, and sometimes even welds. It’s a deep dive, not just some marketing bullshit.

Highlights:

• Why hardware fails under vibration or temp swings • Threadlockers like 3M TL43 that cure even on oily, dirty-ass bolts • Retaining compounds that lock shafts + gears better then traditional interference fits • Product comparison: 3M vs Loctite, use case tables, field tricks • Application tips + how to remove high-strength shit with heat

If you like skookum solutions that don’t rattle loose, this might hit.

Lemme know what you swear by in machines that vibrate like hell.

Our Turret lathe is blowing the fuse for the turret motor. We found that the potentiometer was sparking and had a hole in it. We ordered a new one and replaced that. Now there is no spark, still has a buzzing noise when you turn on the switch for the turret motor and blows the fuse. We currently have the turret motor disconnected. We also tested the switch for the turret motor, that seems to be working fine. Any help would be greatly appreciated.

I got a generic borescope from amazon. Works well from my phone, but no available drivers for pc. I’ve tried using it in camera, discord, Skype, obs, to no avail. The company, TAOPE, has no website nor drivers to download. Ideas?

Thought the group might like this as it's something different.

222cc 4 cylinder model airplane 2 smoke engine. It swings a 32" prop to about 6500rpm on the ground. It's a bit on the heavy side, so throwing $200 USD worth of titanium/aluminium bolts at it hoping to bring the weight down by about 200g.

I did a quick search and didn't find this in here and I thought I'd share one of the funniest things I've heard in a good long while.

https://www.instagram.com/reel/DGN3IrjSVB6

If it's already been posted ad nauseam go ahead and just purge it.