How to hollow out this shape

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fatbeard
Posts: 32
Joined: Thu Oct 22, 2020 7:47 am

How to hollow out this shape

Post by fatbeard »

I have a shape like this:
Screenshot from 2021-09-20 15-10-06.png
Screenshot from 2021-09-20 15-10-06.png (143.52 KiB) Viewed 805 times
and want to make it hollow with a 1mm wall thickness.
The "make a thick solid" tool does not work: it reports Thickness not possible on selected faces/edges. , Error, Select an edge, face, or body from an active body. (with the body selected) or BRep_API: command not done depending on the item(s) selected but does not do anything else...

Surely I am doing something wrong, but can not find out what: the error messages are, ehrmm, not very helpful...

I even simplified the block, reducing it to only flat surfaces and a single padding, only to get the same list of errors.

OS: Linux Mint 20 (X-Cinnamon/cinnamon)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.
Build type: Release
Branch: unknown
Hash: 0d9536ed3e8c7f40197b5606e1b7873625e1d6fe
Python version: 3.8.10
Qt version: 5.12.8
Coin version: 4.0.0
OCC version: 7.5.2
Locale: English/United States (en_US)
Attachments
SenseoXLfloat.FCStd
(42.61 KiB) Downloaded 20 times
User avatar
papyblaise
Posts: 4249
Joined: Thu Jun 13, 2019 4:28 pm
Location: France

Re: How to hollow out this shape

Post by papyblaise »

you did not specify which faces to open, which to keep
Attachments
thicknes.PNG
thicknes.PNG (13.43 KiB) Viewed 778 times
openBrain
Posts: 6514
Joined: Fri Nov 09, 2018 5:38 pm

Re: How to hollow out this shape

Post by openBrain »

Thickness feature doesn't work this way. It works as if you were hollowing the solid by "digging in" it from a face (several faces). And you basically select this(these) face(s). You can't hollow a plain solid that shall keep it's external envelope identical at the end.
fatbeard
Posts: 32
Joined: Thu Oct 22, 2020 7:47 am

Re: How to hollow out this shape

Post by fatbeard »

Thanks.
The picture that @papyblaise showed was almost correct (the comment was spot on :oops: ), @openBrain nailed it.
.I did it before, but got a little confused juggling 4 different CAD programs at once...
Screenshot from 2021-09-20 16-47-14.png
Screenshot from 2021-09-20 16-47-14.png (120.51 KiB) Viewed 720 times
.
Next challenge: webbing, magnet holder and an attached lid...
kisolre
Posts: 3344
Joined: Wed Nov 21, 2018 1:13 pm

Re: How to hollow out this shape

Post by kisolre »

fatbeard wrote: Mon Sep 20, 2021 2:58 pm Next challenge:
Keep us updated on your progress :)
domad
Posts: 644
Joined: Mon Jun 22, 2020 12:16 pm

Re: How to hollow out this shape

Post by domad »

Greetings to the Community!
.... since it resembles a bottle, I am attaching an example of a workflow that allows you to empty it (entirely) maintaining a thickness of 1 mm, then create the neck (which could be threaded) finally open literally to show the internal part with the edges connected like the outside. :)
Attachments
SenseoXLfloat.FCStd
(709.8 KiB) Downloaded 18 times
SenseoXL-bottle.png
SenseoXL-bottle.png (320.22 KiB) Viewed 585 times
fatbeard
Posts: 32
Joined: Thu Oct 22, 2020 7:47 am

Re: How to hollow out this shape

Post by fatbeard »

Nice bottle! But I wanted to avoid subtracting two solids...
Just a quick update on the status:
.
Screenshot from 2021-09-21 14-56-30.png
Screenshot from 2021-09-21 14-56-30.png (136.29 KiB) Viewed 554 times
.
I know, the lid hinge is not in the right place: when closed, there will be a 1mm ridge. Working on that.
I also have to route an extremely densely packed 12-layer PCB with lots of constraints by the end of the week, so be patient.
Attachments
SenseoXLfloat.FCStd
(417.78 KiB) Downloaded 13 times
User avatar
papyblaise
Posts: 4249
Joined: Thu Jun 13, 2019 4:28 pm
Location: France

Re: How to hollow out this shape

Post by papyblaise »

voilà un joli bidon
Attachments
bidon.PNG
bidon.PNG (17.83 KiB) Viewed 493 times
bidon.FCStd
(369.52 KiB) Downloaded 13 times
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