hollow out object

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JussyAD
Posts: 377
Joined: Tue Apr 20, 2021 4:30 pm

hollow out object

Post by JussyAD »

Hi

How do I make this a thick solid shell? I created it in Part WB so I cannot use PartDesign WB.

OS: Windows 8.1 Version 6.3 (Build 9600)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.24291 (Git)
Build type: Release
Branch: releases/FreeCAD-0-19
Hash: 7b5e18a0759de778b74d3a5c17eba9cb815035ac
Python version: 3.8.6+
Qt version: 5.15.2
Coin version: 4.0.1
OCC version: 7.5.0
Locale: English/South Africa (en_ZA)
Attachments
PART53001.PNG
PART53001.PNG (64.18 KiB) Viewed 1464 times
PART53 SECTION.FCStd
(108.47 KiB) Downloaded 31 times
TheMarkster
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Posts: 5505
Joined: Thu Apr 05, 2018 1:53 am

Re: hollow out object

Post by TheMarkster »

You can use it Part Design. Just select the Cut, go to Part Design and create a new Body with it selected. It adds to the Body as a "BaseFeature". You can then use the Thickness tool on it. Unfortunately, Thickness is a finicky tool and often fails, as it does in this case, so Plan B:

Select the Cut and in the Edit menu -> Duplicate. Press OK. Be sure to also copy all of the dependencies it offers in the dialog. Edit the new Circle object to be the radius desired for the inside of the pipe. With that done cut the new Cut001 from the original Cut.
Snip macro screenshot-d02a71.png
Snip macro screenshot-d02a71.png (59.8 KiB) Viewed 1432 times
Edit: Part workbench has a Thickness tool, too. (Which also fails.)
Last edited by TheMarkster on Sun Oct 24, 2021 5:43 pm, edited 1 time in total.
chrisb
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Posts: 53919
Joined: Tue Mar 17, 2015 9:14 am

Re: hollow out object

Post by chrisb »

I would do all of this in PartDesign with an appropriate two-circle sketch. Here I reused your path, but you can better do it directly in PartDesign.
SnipScreenshot-74a558.png
SnipScreenshot-74a558.png (31.49 KiB) Viewed 1340 times
Edit: sorry, had uploaded the wrong file.
Attachments
PART53_cb.FCStd
(38.57 KiB) Downloaded 24 times
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Shalmeneser
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Posts: 9474
Joined: Wed Dec 23, 2020 12:04 am
Location: Fr

Re: hollow out object

Post by Shalmeneser »

Code: Select all

 └ Body001 (Body)
    ├ Binder (Binder)
    ├ AdditivePipe (AdditivePipe)
    │  └ Sketch002 (Sketch)     (R=6)
    └ SubtractivePipe (SubtractivePipe)
       └ Sketch003 (Sketch)       (R=5)
Attachments
Sweepy hole.FCStd
(42.23 KiB) Downloaded 25 times
Capture du 2021-10-24 23-15-52.png
Capture du 2021-10-24 23-15-52.png (97.44 KiB) Viewed 1269 times
mrdic
Posts: 130
Joined: Wed May 10, 2017 4:25 am

Re: hollow out object

Post by mrdic »

Offsetting of your pipe doesn't fail, it has endcaps that close it off to make it a shelled solid. Go to the data of the "sweep" and make the "solid" attribute false, then you can offset it the thickness you want, with fill offset true to make the pipe walls solid.
JussyAD
Posts: 377
Joined: Tue Apr 20, 2021 4:30 pm

Re: hollow out object

Post by JussyAD »

Thanks, everyone that advised. Much appreciated!
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