PartDesign - Chamfer at Partial Contour

[maker]

Hi all,

I've designed a part, to which I want to apply a chamfer at a partial contour indicated by the two red lines in the enclosed figure.
I tried it in the usual way with the PartDesign chamfer feature, but the result was a surrounding chamfer.

Has anyone an idea to solve the problem?

Kind regards

[papyblaise]

I find a problem here

[Bance]

It's a malformed model.

Please follow the correct PD workflow.

[maker]

I find a problem here

Thank you for your reply, but this is NOT the solution I intended to get.

Apparently my figure was misleading. I need a chamfer that starts exactly at the red mark on the left, i.e. in the middle of the left edge.

[freedman]

A chamfer and fillet are going to apply for the entire length of the segment. You will need to do one of two things:
1) Do the full chamfer and then rebuild (add solids) back to the original some portion.
2) Create a path (start and end planes) and sweep the profile you want.

[drmacro]

Yes, that one gets tricky because Chamfer tool is always following edges.

So, you need to get tricky.

ChamferPartialEdge.png (102.38 KiB) Viewed 928 times

[papyblaise]

Which one : the red or bleu , it's not clear

[maker]

@drmacro
Thanks for your solution approach.
After carrying out the cut of the two forms my desired solution is there!
But what a way to get it.

@papyblaise
Thank you too. The red one is the desired one.

I must ask:
Is there not another, much simpler way, than this very elaborate of cutting two shapes?

Ok, how should the PartDesign feature know where to stop the calculation for getting the desired...

How do other 3D modelling programs carry out this operation?

[drmacro]

I must ask:
Is there not another, much simpler way, than this very elaborate of cutting two shapes?

It could argued that stopping a chamfer part way along an edge is indeed elaborate.

In a real world shop how would "where to stop" the chamfer be specified?

How would it be accomplished to have an abrupt cut like this. "file to fit"?

Typically you would run a chamfer tool along an edge. In this case it would leave a fillet and require filing, or fixturing the part so it could be cut with an end mill.

Ok, how should the PartDesign feature know where to stop the calculation for getting the desired...

Indeed a very good question.

The way I accomplished it in my example was to force an edge where I put the stop. That allowed me to select as much of the edge as desired for the chamfer, and not the rest.

How do other 3D modelling programs carry out this operation?

Another good question...and I don't have an answer.

[chrisb]

It was mentioned somewhere in the forum as a SolidWorks trick: use a "chamfer/fillet stopper" formed by a small subtractive ball in the right place of the edge.