CheckVBitAngle

From Shopbot Wiki

Checking the True angle of a v-bit:

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. It uses a process for finding the true angle of your bit which is very similar to the way the printheads on an inkjet printer are aligned.

Download, unzip, and run this VCarvePro .crv fileon a piece of scrap material with the bit you want to test. The file has been toolpathed (using V Carve) by specifying 11 different bit angles from 85 to 95 degrees. When it's finished cutting find the lowest numbered angle that looks OK and the highest number that looks OK, then average these two and that’s the angle to specify for this bit when using V Carve.


Image:Paulz_test.jpg



Here is the “85” cut.

85 degree cut
85 degree cut


Notice in the “85” cut that the corners are bowed out a little and that the top edge looks bowed up.

Here is the “95” cut.

95 degree cut
95 degree cut

Notice in the “95” cut that the corners are bowed in a little and that the top edge looks bowed down.


--Paul Zank 07:49, 16 September 2007 (EDT)


Contributors
Paul Z
Personal tools