- Joined
- Dec 26, 2016
- Messages
- 2,015
I made an adjustable circle cutter last year similar to many you see on the market , never cut anything with it until yesterday, the cutting bit for it is a 1/4"x 1/4" HSS blank , I searched the net but couldn't find any reference to this type of cutter, only thing I found was Lee Valley's bit:
I tried that profile with an end cut angle of 10°, no relief angle, side cut, just the end cut ,well it did cut but burnt where there was friction , I have never done any cutting tool grinding but I'm thinking my next profile should be like "V" shape,similar to the tip of a nail,with two (or 4 sides).:
So my question is, what's the most logical profile for this application. should I keep it like the first picture but with a 15° -20 ° end cut?
I tried that profile with an end cut angle of 10°, no relief angle, side cut, just the end cut ,well it did cut but burnt where there was friction , I have never done any cutting tool grinding but I'm thinking my next profile should be like "V" shape,similar to the tip of a nail,with two (or 4 sides).:
So my question is, what's the most logical profile for this application. should I keep it like the first picture but with a 15° -20 ° end cut?