Flat surface creation

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

Flat surface creation

Post by JussyAD »

Good day

How can I create a flat surface bridging the two surfaces at either end? As you can see, I tried, but to no avail, since I cannot apply thickness.
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JussyAD
Posts: 377
Joined: Tue Apr 20, 2021 4:30 pm

Re: Flat surface creation

Post by JussyAD »

Code: Select all

OS: Windows 8.1 Version 6.3 (Build 9600)
Word size of FreeCAD: 64-bit
Version: 0.20.2.29177 +426 (Git)
Build type: Release
Branch: (HEAD detached from 0.20.2)
Hash: 930dd9a76203a3260b1e6256c70c1c3cad8c5cb8
Python 3.8.10, Qt 5.15.2, Coin 4.0.1, Vtk 8.2.0, OCC 7.6.3
Locale: English/South Africa (en_ZA)
Installed mods: 
  * A2plus
  * BIM
  * CurvedShapes
  * Curves
  * Dracula 0.0.2
  * ThreadProfile
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onekk
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Re: Flat surface creation

Post by onekk »

Strange definition of "flat surface".


Surface in FreeCAD is something infinite, and usually it is not even a solid.

a Face could be extruded but foillowing Topology a Face is a "limited portion" of a Surface.

See maybe, if it could help:

https://github.com/onekk/freecad-doc/tr ... nographies Topology PDF file, it is a try to explain things.

Thickness exist in FreeCAD but is a rather delicate operation, as it usually broke, as what you think is easy when seen from a mathematical point of view have some problems that are difficult to solve.

But is a mere question of word.

Did you see "Curves WB"?

It has many useful tools to create "surfaces" and work on them.

https://wiki.freecad.org/Curves_Workbench

Hope it helps.

Regards

Carlo D.
GitHub page: https://github.com/onekk/freecad-doc.
- In deep articles on FreeCAD.
- Learning how to model with scripting.
- Various other stuffs.

Blog: https://okkmkblog.wordpress.com/
JussyAD
Posts: 377
Joined: Tue Apr 20, 2021 4:30 pm

Re: Flat surface creation

Post by JussyAD »

onekk wrote: Sat Feb 04, 2023 3:13 pm
Thanks, Carlo. I used the Curves WB and I thought the Blend tool was my best bet but apparently not. Close but no cigar!
I can generate a surface or face but it has some curvature in an undesired plane. I need it to be coplanar in its local coordinate system.
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onekk
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Re: Flat surface creation

Post by onekk »

JussyAD wrote: Sat Feb 04, 2023 3:19 pm
onekk wrote: Sat Feb 04, 2023 3:13 pm
Thanks, Carlo. I used the Curves WB and I thought the Blend tool was my best bet but apparently not. Close but no cigar!
I can generate a surface or face but it has some curvature in an undesired plane. I need it to be coplanar in its local coordinate system.
A Ruled surface, between two coplanar curves usually works, but sadly not other clues, as I model using scripting so not more experience with GUI.

Regards

Carlo D.
GitHub page: https://github.com/onekk/freecad-doc.
- In deep articles on FreeCAD.
- Learning how to model with scripting.
- Various other stuffs.

Blog: https://okkmkblog.wordpress.com/
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Vincent B
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Re: Flat surface creation

Post by Vincent B »

There are something strange here, offset cannot works well.
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JussyAD
Posts: 377
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Re: Flat surface creation

Post by JussyAD »

Vincent B wrote: Sat Feb 04, 2023 3:28 pm There are something strange here, offset cannot works well.
right, even 3D offset not giving me the clean shape I need to make a solid. What Can be done?
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Vincent B
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Re: Flat surface creation

Post by Vincent B »

use approximation with joincurve avoid that. then facebinder of exterior faces and offset3D instead thickness feature.
sorry, the file is about 3Mo.
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JussyAD
Posts: 377
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Re: Flat surface creation

Post by JussyAD »

Vincent B wrote: Sat Feb 04, 2023 6:58 pm use approximation with joincurve avoid that. then facebinder of exterior faces and offset3D instead thickness feature.
sorry, the file is about 3Mo.
Thank you. It looks perfect. If the file is too large to attach here, please use we transfer and share the link here. Will be much appreciated.
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Vincent B
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Re: Flat surface creation

Post by Vincent B »

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