How to use 2D Chamfer to make a 30° edge

[hans.billiet]

I'm trying to machine the below feature in Plexiglass (see marking in the drawing below).

This is designed as a chamfer. The angle is 30°, and the height is 3 mm. I have included my f3d file in this post.

I'm using a Chamfer Mill with a diameter of 3mm and a taper angle of 30°. This results in a flute length of 2.6mm, which means that I would expect to see several passes. Because I don't want to go to fast, I would even prefer to use passes with a depth of 0.4mm (I'm normally using this when cutting in my Plexiglass). But the "2D Chamfer" seems not to have any option to enter "multiple passes", so I have the strong feeling that, although the name indicates "chamfer", I'm using the wrong tool or method.

If I look at the simulation, there is only one pass towards the lower edge (and yes, that's the edge I selected). But because the flute length is only 2.6, and I'm even having an offset of 0.2mm, it's logic that I seem to miss a part that is not cut (see marking in the drawing below).

I'm sure I'm doing it wrong. Can somebody give me some hints? Thanks!

[seth.madore · Accepted solution]

Neither 2D Chamfer or 2D Contour (with Chamfer enabled) allow for multiple stepdowns, unfortunately.

We have tickets open to address at least 2D Contour (with Chamfer), but it's taken a backseat to other more pressing tickets.

So, what's a programmer to do...
Use 2D Contour, enable Chamfer
Select the top edge (use the ALT key to select a single chain)

Set Chamfer Size to zero

Set Chamfer Tip Offset to 1.5

Duplicate toolpath

Set this new toolpath to a Chamfer Tip Offset of 3.2 (or any value that gets you below the bottom of the part.

Result:

 

[hans.billiet]

Just perfect! Thanks a lot!