extruding to offset from angled construction plane (unexpected result)

[john.finleyZKHPN]

Hello,

As part of my project, I ran across this, which produces "unexpected" results. What I'm trying to do is beside the point (hobby user/license); it just seems this is wrong.

I reduced it to the following:

New project, create a sketch with just a 20mm square, finish sketch.

Construct a "plane at angle" through one edge of the square (which is also the x-axis; I suppose that could be relevant), rotated 10 degrees.

Extrude the square upwards, extent type = to object (the construction plane), offset 10mm.

What I expect is a square-based column with a sloped top. What I get is a wedgie.

Again, what I'm trying to do is rather beside the point. This is just unexpected at the least, maybe wrong.

Thanks for reading!

[john.finleyZKHPN]

It's easy to work around, so if it is a bug maybe it's really low priority. Extruding to a second construction plane (offset from the first) is one way. The resulting solid here is what I expect.

[g-andresen]

Hi,

I could not reproduce the behavior.

Please share the file.

File > export > save as f3d on local drive  > attach it to the post

günther

[jhackney1972]

This is because you place the angle plane on the edge of the first sketch.  You need to make an offset plane, for the column height at the shortest end, then create the angle plane there.  Model attached.

[g-andresen]

Hi,

works!

günther

[john.finleyZKHPN]

@g-andresen: In your video, you don't offset from the construction plane to create a square column. What you did works for me too. f3d file attached.

@jhackney1972: Yes, that works. I think there are lots of ways to get to the desired result (as always!). I had first done it similar to what you did (multiple planes), then figured I'd try it with fewer steps. Doing it in a way that works is not hard; I just posted this because it seems like I ran across a sequence of steps that doesn't work as one might expect. Maybe my expectation is the incorrect part.

Thanks both for looking into it!