Re: Chinese innovation - square holes from a standard mill
Posted: Thu Dec 15, 2011 10:23 am
Yes the bit should be non-standard for it to work; the bit needs to be a curve of constant width with 3 apexes [that is, 3 'sided' to acheive a square hole] (with cutting edges formed at the apexes) and the gear is an eccentric arrangement, one gear set on another ('epi-cycle'-like).
Not a clue where you'd get one from... China !?!
Not a clue where you'd get one from... China !?!