There have been many users who have had difficulty getting V Carved cuts to come out properly only to find that their V bits are not the angle they are advertised to be. What follows is a process to determine the bit angle of an approximately 90 degree bit by examining cuts.
The .crv file contains a triangle which has been toolpathed with bits defined as 85 through 95 degrees. Make cut files for your machine and cut a piece of scrap.
The "85" cut shows what happens when the bit angle is larger than the toolpath bit angle. Notice that the corners are bowed out a little and that the top edge looks bowed up.
The "95" cut shows what happens when the bit angle is smaller than the toolpath bit angle. Notice that the corners are bowed in a little and that the top edge looks bowed down.
I would suggest that one find the lowest number angle that looks OK and the highest number that looks OK. Average these two and that’s the angle to specify for this bit when using V Carve.
I hope this helps to save time and material while minimizing frustration.
Paul ZBrian - 11/12/2009 Copied to technical archive and non-technical responses removed - original topic can be found here -> viewtopic.php?f=3&t=2164