[ticket #2998] Sketch with 2 shapes (rings) wont pad - Broken face

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Kunda1
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[ticket #2998] Sketch with 2 shapes (rings) wont pad - Broken face

Postby Kunda1 » Sat Apr 29, 2017 12:36 pm

Thread to discuss issue #2998 - Sketch with 2 shapes (rings) wont pad - Broken face
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m0n5t3r
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Re: [ticket #2998] Sketch with 2 shapes (rings) wont pad - Broken face

Postby m0n5t3r » Tue May 02, 2017 5:32 pm

So it's a feature, not a bug? I noticed the problem this week-end, at the beginning of last week a multi-object pad worked (I'm on the freecad-daily ppa). Having to create multiple bodies when you want a number of objects spaced at precise distances is ... annoying to say the least

Real world use case this week-end: 8mm thick part I needed to cut from 4mm plywood, designed the two halves - one has a hole, the other has the same hole + a nut trap, they needed to be aligned on one axis and placed one endmill diameter apart on the other; I ended up having 2 bodies and shape binders and all that, instead of a simple pad + one pocket for the nut trap.

Now I'm afraid to open the 37-identical-hexagons-spaced-2mm-apart-because-there-is-no-hexagonal-array-tool file I worked on last week (that's a true torture test for the constraint solver, too).
chrisb
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Re: [ticket #2998] Sketch with 2 shapes (rings) wont pad - Broken face

Postby chrisb » Wed May 03, 2017 2:45 am

For 37 identical objects with identical spacing you can use the Draft Array.
Another possibility is to start with a common base plate which you finally cut away in the Path Workbench.
m0n5t3r
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Re: [ticket #2998] Sketch with 2 shapes (rings) wont pad - Broken face

Postby m0n5t3r » Wed May 03, 2017 10:07 am

chrisb wrote:For 37 identical objects with identical spacing you can use the Draft Array.
Another possibility is to start with a common base plate which you finally cut away in the Path Workbench.
if only there was a hexagonal array in there... :)
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DeepSOIC
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Re: [ticket #2998] Sketch with 2 shapes (rings) wont pad - Broken face

Postby DeepSOIC » Wed May 03, 2017 11:19 am

Even though there's no hexagonal array tool, it can be set up with a few tricks.
Grab some from this old thread:
https://forum.freecadweb.org/viewtopic. ... 8&start=10
EDIT: and also here:
https://forum.freecadweb.org/viewtopic. ... 8&start=10
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Kunda1
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Re: [ticket #2998] Sketch with 2 shapes (rings) wont pad - Broken face

Postby Kunda1 » Sat Jun 09, 2018 1:20 pm

@DeepSOIC wrote in the ticket https://freecadweb.org/tracker/view.php?id=2998#c8805
PartDesign silently discards the other profile and IMO it's not correct. It should either fail, or issue a warning... but in any case, it should give some info on what's wrong.
Is there agreement on this?
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NormandC
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Re: [ticket #2998] Sketch with 2 shapes (rings) wont pad - Broken face

Postby NormandC » Sun Jun 10, 2018 4:44 am

This is related to issue #1707.

wandererfan tried to address it with PR 1398 but it got shot down, which I find inexplicable and quite frustrating.
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DeepSOIC
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Re: [ticket #2998] Sketch with 2 shapes (rings) wont pad - Broken face

Postby DeepSOIC » Sun Jun 10, 2018 10:54 am

NormandC wrote:
Sun Jun 10, 2018 4:44 am
This is related to issue #1707.

wandererfan tried to address it with PR 1398 but it got shot down, which I find inexplicable and quite frustrating.
I read the PR discussion, it was decided that one-solid-per-body rule should be abandoned. Hmm, I'm in!
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NormandC
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Re: [ticket #2998] Sketch with 2 shapes (rings) wont pad - Broken face

Postby NormandC » Sun Jun 10, 2018 7:45 pm

LOL. Best to mention your intent in the PR then, considering the last one I made just yesterday. :D

And good luck! :)