this post was submitted on 25 Feb 2026
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[–] WhiteHotaru@feddit.org 8 points 1 week ago (1 children)

What are we looking at? Are you polishing the top face to be usable again?

[–] domdanial@reddthat.com 10 points 1 week ago (1 children)

Yep, just decking the top to make it smooth and flat. Had been forgotten in a barn for 30 years.

[–] deadbeef79000@lemmy.nz 3 points 1 week ago (2 children)

It's looks like it's in remarkably good condition for 30 years in a barn!

What comes next after machining the top?

[–] Nomecks@lemmy.ca 8 points 1 week ago (1 children)

Anvils last a long time even in the shittiest conditions. They're blocks of iron or steel and it's hard for rust to really penetrate deep

[–] domdanial@reddthat.com 3 points 1 week ago (1 children)

Also I'd already attacked it with a flap disk to get most of the surface rust off, it was pretty fuzzy when I started.

[–] Nomecks@lemmy.ca 2 points 1 week ago* (last edited 1 week ago)

Is it branded on the other side?

[–] domdanial@reddthat.com 3 points 1 week ago (1 children)

I flipped it over actually, try to get the bottom parallel but I gave up after a few passes, it would have taken more than I was willing to cut.

[–] ironeagl@sh.itjust.works 3 points 1 week ago

Should put some nice chamfers and radii on the edges, you use the edge of an anvil a fair but, and being able to select a radius, chamfer, or square edge is nice.

[–] j4k3@lemmy.world 6 points 1 week ago (3 children)

How much does a job like that run at retail walk-in rate?

[–] domdanial@reddthat.com 7 points 1 week ago

Well this was a personal project at a shop I work at, so I don't have any pricing knowledge really. I did burn up several sides to the inserts I used, so that's like $60 in tools, took about an hour of messing around with it. I bet a shop with more experience with hard metal and big stuff would charge you $100-200 to face it, depends on shop rate and stuff.

[–] Atropos@lemmy.world 6 points 1 week ago (2 children)

If it's hardened, you'll want carbide tooling, which can be spendy if you break it. A shell/face mill like was used here works great.

Personally, I probably would have tried to fly cut this with a carbide tool for that extra fancy surface finish!

I would charge $75 or so to do this if I like you. But I only machine as a hobby, and have no idea of going rates for walk-ins.

[–] KingGimpicus@sh.itjust.works 1 points 6 days ago (1 children)

Carbide is acceptable and will get the job done, but youre going to burn up a lot of inserts getting it dialed in.

Ceramic, on the other hand, is purpose designed for cutting hardened materials.

I was tearing my hair out trying to turn a hardened 4140 piece in my lathe even running carbide. Then I picked up some ceramic inserts and it was like night and day. Immediate and dramatic improvement in surface finish and tool life.

We have a face mill that takes the same style carbide (although smaller size) that my lathe tool does and I'm very interested to see how that runs with ceramic.

[–] socsa@piefed.social 1 points 6 days ago (1 children)

Tungsten and boron carbide should be much harder than any ceramic, though I have had similar experiences with carbide drill bits. I wonder what exactly "carbide" actually means sometimes.

[–] KingGimpicus@sh.itjust.works 1 points 6 days ago (1 children)

Most carbide I've run into is usually around 65HRC. The ceramic is have in my lathe right now is 95HRC. Its a significant difference. Its brittle, so it doesn't like interrupted cuts, but it loves heat and speed that would cook carbide in seconds.

[–] Atropos@lemmy.world 1 points 5 days ago

65 seems really low to me for something called carbide, but I'll need to do some research into this!

[–] j4k3@lemmy.world 3 points 1 week ago (1 children)

I wonder what someone with wire EDM would charge. That seems like an ideal and cheap use. I've been dreaming of EDM lately... in a Linsey Publications type of context.

[–] Atropos@lemmy.world 1 points 1 week ago

That'd be a long depth of cut! Would also leave a rougher surface, if you care about that.

[–] viral.vegabond@piefed.social 3 points 1 week ago

about tree-fiddy

[–] HeartyOfGlass@piefed.social 4 points 1 week ago (2 children)
[–] domdanial@reddthat.com 6 points 1 week ago

It said 127lbs on the casting, just about all I could do to pick it up.

Good call. Gotta lift it by the horn.