[Cartierusm]

I use RhinoCad and RhinoCAM but it doesn't have a tool for a corner rounding endmill. I want to round the top edges of a part I'm making, how would I do that. Should I trick the Cam into thinking I'm using a different bit, how would I do that?

Here's the type of bit I'll be using, if you know of something else better or different let me know, Thanks.

http://www.wttool.com/product-exec/p...ding_End_Mills

[benjamint76]

I don't use Rhino, but for simplicity, I would create an offset toolpath(I would assume on the outside of the part), fool the CAM tooling and let it run...make sense?

[Superman]

I use Mastercam,
the principle is to program using the smaller pilot dia of the cutter to cut to the depth of the radius required beside the lower wall of your profile.

Setting of the tool length on the machine is to the centre of the forming radius

Eg. a 3/8" corner rounding cutter that has a 8mm base dia
-you program using a 8mm endmill and cut it at 0.375" deep

[Cartierusm]

Thanks. Is that the best way to round corners for apperance?

[mc_n_g]

Take the radius of the endmill and subtract the radius of the curve. Offset your part by the resulting amount. Once you have the offset you need to set the depth of endmill to the radius of the curve. This is to get the top of the curve to meet the top of your part. Make sure your outer edges as clear of clamps, etc. You don't want to hit those.