
Use a Reuleaux triangle drill bit to create square holes (…well, almost-square holes).
…sort of like a Wankel engine for woodworking.
Reuleaux Triangle – Mathworld … via Hacker News
Related posts:

Use a Reuleaux triangle drill bit to create square holes (…well, almost-square holes).
…sort of like a Wankel engine for woodworking.
Reuleaux Triangle – Mathworld … via Hacker News
Related posts:
Leave a Reply