View Full Version : Need to cut a bevel...

08-25-2008, 11:16 PM
I need to cut a bevel on the top of a part using a 1/4" bit. See parts below. I need the small parts to be 25 degrees and the large parts to bevel at 40 degrees. I'm thinking some kind of 3D raster might do the job. For the small parts it doesn't have to be perfect, I might be able to do it with step downs. For the larger part, however, it needs to be "very good" as one of the bevels will show on the finished product.

I want to use the same 1/4" bit on this already 2 bit job, Am I chasing a dream here or can it be done?



08-26-2008, 12:15 PM
Harry, when I have short bevels like that, I use my C# to generate the SBP file, then as Z goes deeper I move X (or Y) away at the ratio of:

DeltaX = ZDepth * tan(BevelAngle)
X = XEnd + BitRadius + DeltaX

That can be coded in the SBP file itself if you want to hand code it. The +'s become -'s for the other end of the material.

Good luck


Gary Campbell
08-26-2008, 06:30 PM
Don't suppose you want to add a custom angle V bit to the arsenal? Get one made with an 1/8" straight on the bottom and do the grooves with it also.