How do people cut sharp inside corners, like the triangles shown? This example is cut in stone but I have seen similar features on wooden building blocks.
this post was submitted on 29 Oct 2023
15 points (89.5% liked)
Machinist
880 readers
1 users here now
From Newcomers to Old Timers, a community united by the Industry of Machining
Rules Don't post illegal stuff
Don't post Porn (no sexy aluminum surface finishes don't count)
Don't be an asshat (harassment, bullying etc.)
If you're going to post NSFW stuff, flag it as NSFW, It's ok to post shop Screwups (blood/cuts) just make sure to flag it as NSFW
and Finally make sure to have a good time :D
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
If we're talking tight tolerance, you could custom broach it, use a wire EDM, a sinker EDM, or live with a small radius from whatever your smallest diameter endmill is.
For wooden building blocks with larger tolerances it's a little simpler, likely a scroll saw or bandsaw.
Anyone else, please chime in if you know of additional options!
Can you wire-EDM natural rock? If this were a through-hole instead of indentation, I'd say using an old fashion file or a (mechanical) planer.
Sorry, I am stuck in the metals space and took this as a general question. For the specific situation above, it's likely a chisel or some kind of masked abrasive blast