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Bit radius not matching corner radius12/8
Is anyone familiar with TPA CAD? I am attempting to use this software to make mdf doors. When I pocket out a rectangle ( shaker door panel) with a 1/8" cutter the corner radius is more than 1/16", closer to 3/32". Any ideas?
Are you programming a radius in the corner or leaving it sharp?
It's programmed as a rectangular pocket. I haven't specified any corner radius, I just assumed it would be the radius of the bit.
What's the G code say at the corners?
It sounds like you are pocketing out the center. Most programs I have used by default when you pocket stay on the inside of the profile. What you want to do is add a separate operation that cuts on center of the profile. This would get you what you are looking for.
Look at the G Code
It could be that there is a small radius being called for in the corner?
If the G Code is good, it could be tool deflection. When I do a pocket I use a 2" for pocketing and then go around the inside edge of the pocket with a 1/2", then a 1/8".
my freinds TpaCAd have no gcode