45 Degree trace to chamfer

[Ryan_Fab]

I like to do as little as possible off the machine so I will break edges where I can. Is it possible to put the chamfer on the angled edge using a trace chamfer command? Ive had a play around, tool does have a flat, but it gauges. Could it be that it just cant handle it because its steep?

Any suggestions welcome, Thanks

[Steinwerks · Accepted solution]

Yes, the steeper it is the more problematic it will get. That said, you could try using Project in the 3D toolpaths with a sketch offset by a little less than the radius of the tool. That or surface it with a ball or bullnose end mill.

[Anonymous]

Hi, I'm trying to do that trace chamfer at a 45º as well. Would you mind showing your geometry selection? Are you using a 5 axis? I have to do it on this regular 3 axis CNC mill, but I don't get the chamfer on the upper flat and the ones I get on the slopes are terrible.

[Ryan_Fab]

I’ll send you a part where I kind of managed it.

I’m out now so I’ll have a look for you when I get home.... most my stuff is 3 axis

[Ryan_Fab]

Would you like to share your file and ill have a look?

[Anonymous]

Here it is. The tool I have is a Helical 59821, it's a 3/8" chamfer mill

[Anonymous]

I just want to break the edge with a .02" chamfer. Preferably in one sweep per side, but I get odd results. Unfortunately, I'm not allowed to upload the file, therefore the screenshot.

[Ryan_Fab]

I have found that it's almost impossible to do what you're trying to do with 3 axis. As others have said above, the steeper the chamfer the worse the results. I've attached a file showing another way of achieving this result but using a ball nose. Its not as quick as there are a few passes but providing your batches are small it probably wont be an issue 

Hopefully this helps