Can't make a union of two bodies

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hph
Posts: 25
Joined: Mon Aug 15, 2022 4:07 pm

Can't make a union of two bodies

Post by hph »

Hi,

I'm trying to make a union of the "Main Body" and "Support" bodies here. Eventually I want to add fillets between the two. I get this error:

Code: Select all

12:04:40  <Exception> MultiFusion failed
12:04:40  Recompute failed! Please check report view.
My project is attached. Any help would be appreciated. :)

Code: Select all

OS: Windows 10 Version 2009
Word size of FreeCAD: 64-bit
Version: 0.20.29177 (Git)
Build type: Release
Branch: releases/FreeCAD-0-20
Hash: 68e337670e227889217652ddac593c93b5e8dc94
Python 3.8.10, Qt 5.15.2, Coin 4.0.1, Vtk 8.2.0, OCC 7.6.2
Locale: English/United States (en_US)
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chrisb
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Re: Can't make a union of two bodies

Post by chrisb »

Hi and welcome to the forum!
hph wrote: Mon Aug 15, 2022 4:14 pm My project is attached.
No.

Fusion sometimes fail if you have coplanar faces or seams on seams. If possible allow them to overlap a little bit.
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hph
Posts: 25
Joined: Mon Aug 15, 2022 4:07 pm

Re: Can't make a union of two bodies

Post by hph »

Hmm I hit the attach button and it uploaded, let me try again here.

Though I believe that is the problem.

Thanks chris :)
turntable, top 3.FCStd
(62.97 KiB) Downloaded 7 times
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thomas-neemann
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Re: Can't make a union of two bodies

Post by thomas-neemann »

hph wrote: Mon Aug 15, 2022 6:17 pm ...

in realthunder i get this error message
1.png
1.png (8.13 KiB) Viewed 443 times
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hph
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Re: Can't make a union of two bodies

Post by hph »

thomas, thanks, looks like the problem was having exactly coplanar faces.

Though now I have this problem where my thru holes are intersected by the other body's geometry. I've tried every option (Through all, Dimension, etc.); IDK why they are not working.

(Design has been changed to a rotated cross section of the supports, instead of discrete supports.)

EDIT: I could just change the support sketch, but I feel I would run into this again later.

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turntable, top 3.FCStd
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thomas-neemann
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Re: Can't make a union of two bodies

Post by thomas-neemann »

hph wrote: Mon Aug 15, 2022 6:38 pm ...
now I have 2 error messages
Bildschirmfoto_2022-08-15_20-43-20.png
Bildschirmfoto_2022-08-15_20-43-20.png (85.54 KiB) Viewed 419 times
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hph
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Re: Can't make a union of two bodies

Post by hph »

hmm
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thomas-neemann
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Re: Can't make a union of two bodies

Post by thomas-neemann »

hph wrote: Mon Aug 15, 2022 6:54 pmhmm
if you want i can build it in part and link a video of it here
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hph
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Re: Can't make a union of two bodies

Post by hph »

I think I'm good for now, thanks :)

Do you know how to change the scale of a view in a drawing? I adjust the scale in properties and it does nothing.
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Bance
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Re: Can't make a union of two bodies

Post by Bance »

Really for PD WB this is incorrect workflow.

If it is a single solid it should be modeled in the same body.

Something like this....
Attachments
turntable, top 3Bance.FCStd
(242.14 KiB) Downloaded 2 times
turnT.png
turnT.png (84.19 KiB) Viewed 352 times
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