Modeling corner of frame

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csetera
Posts: 55
Joined: Mon Nov 23, 2020 1:19 pm

Modeling corner of frame

Post by csetera »

I'm slowly learning my way around (parts of) FreeCAD, but continue to run into things that I don't know how to do. What is the best way to take the attached "frame" and model a corner where two of these sections would come together at a 90 degree angle?
frame.png
frame.png (27.98 KiB) Viewed 1285 times
The associated FreeCAD file is attached. I'm running:

Code: Select all

OS: Ubuntu 22.04 LTS (ubuntu:GNOME/ubuntu-wayland)
Word size of FreeCAD: 64-bit
Version: 0.20.28918 (Git) AppImage
Build type: Release
Branch: (HEAD detached at 69a4963)
Hash: 69a4963ebfdbdda0d069347d013f28f2d6ba687a
Python 3.9.12, Qt 5.12.9, Coin 4.0.0, OCC 7.5.3
Locale: English/United States (en_US)
Installed mods: 
  * ExplodedAssembly
Thanks for any insights.
Craig
Attachments
frame.FCStd
(42.34 KiB) Downloaded 24 times
kisolre
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Posts: 4163
Joined: Wed Nov 21, 2018 1:13 pm

Re: Modeling corner of frame

Post by kisolre »

Use existing model for BaseFeature of two new bodies. Position as desired, cut(pocket) unwanted overlaping material form both new bodies. You can use a datum plane in one body for that ant then use SubShapeBinder of same datum plane in the other body to cut it accordingly.
csetera
Posts: 55
Joined: Mon Nov 23, 2020 1:19 pm

Re: Modeling corner of frame

Post by csetera »

kisolre wrote: Tue May 24, 2022 3:19 pm Use existing model for BaseFeature of two new bodies. Position as desired, cut(pocket) unwanted overlaping material form both new bodies. You can use a datum plane in one body for that ant then use SubShapeBinder of same datum plane in the other body to cut it accordingly.
Thanks. Do you have any pointers to docs and/or tutorials that would show me how to do this?
kisolre
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Joined: Wed Nov 21, 2018 1:13 pm

Re: Modeling corner of frame

Post by kisolre »

Here is a file. I used ShapeBinder instead of SubShapeBinder for the second cut with TraceSupport=true to get a proper plane. Positioning was done by hand.
Your first sketsh is not fully constrained? And instead of that complicated second one you should have used linear pattern.
Attachments
frame_kiss.FCStd
(83.73 KiB) Downloaded 19 times
csetera
Posts: 55
Joined: Mon Nov 23, 2020 1:19 pm

Re: Modeling corner of frame

Post by csetera »

kisolre wrote: Tue May 24, 2022 5:10 pm Here is a file. I used ShapeBinder instead of SubShapeBinder for the second cut with TraceSupport=true to get a proper plane. Positioning was done by hand.
Your first sketsh is not fully constrained? And instead of that complicated second one you should have used linear pattern.
Thanks. I will take a look. I will also take a look at the linear pattern suggestion.
csetera
Posts: 55
Joined: Mon Nov 23, 2020 1:19 pm

Re: Modeling corner of frame

Post by csetera »

kisolre wrote: Tue May 24, 2022 5:10 pm Here is a file. I used ShapeBinder instead of SubShapeBinder for the second cut with TraceSupport=true to get a proper plane. Positioning was done by hand.
Your first sketsh is not fully constrained? And instead of that complicated second one you should have used linear pattern.
Thanks again for the pointers on this. Linear pattern was especially useful to what I was doing. I was also unaware of the Base Feature functionality, which seems like it would really be helpful. Unfortunately, I can't seem to make that work. If I select the top-level body and create a new Body, I'm not seeing any base feature. If I try to select a child feature and create a Body, I'm seeing the error "body can't be based on a Partdesign feature". I'm obviously doing something stupid here, but not sure what that might be.

Thanks again for all of the help. I love FreeCAD and this community!
Craig
kisolre
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Re: Modeling corner of frame

Post by kisolre »

@csetera Select the new body, in its properties click the three dot button at the end ot the BaseFeature property line and select the object to use as BaseFeature from the list.
csetera
Posts: 55
Joined: Mon Nov 23, 2020 1:19 pm

Re: Modeling corner of frame

Post by csetera »

kisolre wrote: Thu May 26, 2022 12:47 am @csetera Select the new body, in its properties click the three dot button at the end ot the BaseFeature property line and select the object to use as BaseFeature from the list.
Thanks. I don't think I would have ever noticed that. Is that new behavior in 0.20 that isn't reflected in the documentation?
kisolre
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Joined: Wed Nov 21, 2018 1:13 pm

Re: Modeling corner of frame

Post by kisolre »

As far as I recall that is the only way I use it since forever...
chrisb
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Joined: Tue Mar 17, 2015 9:14 am

Re: Modeling corner of frame

Post by chrisb »

csetera wrote: Tue May 24, 2022 3:34 pm Do you have any pointers to docs and/or tutorials that would show me how to do this?
Two more possibilities:
1) Select the object you want to use as BaseFeature and create a body
2) For an existing body: In the tree drag the object you want to use as BaseFeature with the mouse on the body
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