Sheetmetal workbench, Unorientable shape causes error

[balvie]

SheetMetal relies on faces, which can cause problems known from the topological naming problem.

I will check that out....

[chrisb]

It's all as expected - though not desired - considering the topological naming problem. Did you follow the link?

Edit: Crossposted.

[Shalmeneser]

If you modify the first sketch, you change the number of faces in the following pad and you (perhaps) change the position of the selected face for the folding. It's the Topological_naming_problem.

You can modify the selected face in the 'base Object' Fold Data.

[Shalmeneser]

Your first sketch is 'open' : all lines are not really connected : Sketcher_ConstrainCoincident.

You should try :
1) to fully constrain this sketch
2) to draw only 1/4 of the drawing the MultiPattern (symmetry, symmetry)

[balvie]

More and more I agree with you about what you mention:

If you modify the first sketch, you change the number of faces in the following pad and you (perhaps) change the position of the selected face for the folding. It's the Topological_naming_problem.

You can modify the selected face in the 'base Object' Fold Data.

But I assume that this modifying needs more "deep inside knowledge" of Freecad as I understand it. Propably using the Python user i.f., which I am not yet familar with.

For now, for the sake of this (delayed) project, I will try to live with it and refrain form making changes to the underlying pad after folding (or do the foldings again if needed).

Thanks for pointing this all out.

[balvie]

As pointed out by @Shalmeneser in an earlier post, I tried to do it using Multipattern. Still no positive results yet.

Clipboard01 - multitrqansform with error.jpg (11.6 KiB) Viewed 848 times

See:

Multipattern test with error.FCStd

(20.83 KiB) Downloaded 22 times

Further: as tested with my contribution "Simple shaped with error.FCStd" (see earlier post) the thing is not related to a sketch being non-constrainted.

So I think I can only continue with sketching the whole thing 4 times and do a one-way usage of it (do no change after folding).

[Shalmeneser]

1) After MultiTransform, you need to set refine=true to see just one face.
2) You cannot fold heavy thickness.

[balvie]

Wauw, I did that on the smaller/test-design and it works. Thanks.

Next thing I have been working on, and maybe off-topic, is the application of a pattern of holes from another design/file onto this file/design. Is there something like an export/impoert of sketches?

[Shalmeneser]

Is the application of a pattern of holes from another design/file onto this file/design. Is there something like an export/impoert of sketches?

Sketcher_CarbonCopy ?