[L98FIERO]

Is there a way in BC to mill a 3D chamfer like in the attached part? I've tried everything I can think of in all the 3D milling options

[aldepoalo]

I haven t look at your file but this is what I would do.

Extract the edges of the chamfer profile

Offset for tool

Use 3d engrave

Depending on how complex the geometry is, these steps should work.

[SBC Cycle]

I took a look. It's a complex curve, could be done with 5 axis, if you were so lucky to have one. If you're like me, your not that lucky. I tried a 3D-Spiral Cut and it came out decent. I don't know how accurate this has to be. It's just a quickie, hope it can be of some use.

Al, I believe it is a complex curve. The chamfer varies from a 45° to a ~51° angle. I know you haven't seen it yet. If anyone else has taken a look and has an idea, I would be interested as well. I remember a similar thread on the old BobCAD forum that dealt with a fillet radius on the edge of a cylinder.

[L98FIERO]

I took a look. It's a complex curve, could be done with 5 axis, if you were so lucky to have one. If you're like me, your not that lucky. I tried a 3D-Spiral Cut and it came out decent. I don't know how accurate this has to be. It's just a quickie, hope it can be of some use.

Al, I believe it is a complex curve. The chamfer varies from a 45° to a ~51° angle. I know you haven't seen it yet. If anyone else has taken a look and has an idea, I would be interested as well. I remember a similar thread on the old BobCAD forum that dealt with a fillet radius on the edge of a cylinder.

That is what I drew from the customers print, I'm sure they would accept 'just' a 45° angle all the way around. I didn't do the prototypes for this part but I know that any of the suppliers that my customer uses don't have 5 axis either. A 3D spiral cut might work but if Als idea of the engraving works that sounds like the easiest, at least until I get helical interpolation on the mill.

[L98FIERO]

The engraving works, I'll have to add a lead in and cutter comp but other than that it looks good. Thanks guys:cheers:

[JEST]

Will this work for ya?
Path is easy enough... don't know your tooling or material

[L98FIERO]

Thanks Jest, that would definitely work but this is chamfer on an agricultural part, not 'worth' all that time. I'm going to use a variation of Als suggestion and do the chamfer in a couple of passes with a 90° chamfer tool