Suggestions on clipping function in Sketcher

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saline
Posts: 115
Joined: Tue Nov 15, 2022 6:20 pm

Suggestions on clipping function in Sketcher

Post by saline »

Code: Select all

OS: Windows 10 Version 2009
Word size of FreeCAD: 64-bit
Version: 0.21.31058 (Git)
Build type: Release
Branch: master
Hash: e6c53d8642af36ce7d738ab6058b063ec58e0859
Python 3.8.13, Qt 5.15.4, Coin 4.0.0, Vtk 9.1.0, OCC 7.6.3
Locale: English/United States (en_US)
Installed mods: 
  * A2plus 0.4.60g
  * ExplodedAssembly
  * fasteners 0.4.51
  * Help 1.0.3
  * sheetmetal 0.2.60
  * ThreadProfile 1.84.0
I'm trying to pad an oblong shape on a surface. It consists of 2 circles at either end, joined by 2 tangential radii.
Hose-oblong.FCStd
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The problem is the tail that I can't figure out how to clip. I created this by generating 2 equal circles then with a constricted radius did tangential joins at each of 4 corners. I then used the clip function to clip away the parts I didn't need. The problem is that there is no point on the lower right tangent to clip away the little tail. I've tried to un-constrict several constrictions and re-tangent, but nothing gives me a clip point at the lower left. Any suggestions?
I'm thing it is a resolution problem because the large radius is represented as line segments and FreeCad can't attach it at the exact point.
FreeCad.jpg
FreeCad.jpg (13.23 KiB) Viewed 365 times
Last edited by saline on Sat Apr 01, 2023 6:24 pm, edited 1 time in total.
user1234
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Posts: 3328
Joined: Mon Jul 11, 2016 5:08 pm

Re: Suggestions on clipping function in Sketcher

Post by user1234 »

I would not clip it anyway, because clipping make no tangential constraint. Make 4 arc circles and connect them via tangential constraint. Works in no time.

Greetings
user1234
GeneFC
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Joined: Sat Mar 19, 2016 3:36 pm
Location: Punta Gorda, FL

Re: Suggestions on clipping function in Sketcher

Post by GeneFC »

I don't understand the problem.

Clip, clip and I am done. About 15 seconds. Pads fine.

Capture.JPG
Capture.JPG (26.04 KiB) Viewed 331 times
Capture1.JPG
Capture1.JPG (19.09 KiB) Viewed 331 times

Gene
saline
Posts: 115
Joined: Tue Nov 15, 2022 6:20 pm

Re: Suggestions on clipping function in Sketcher

Post by saline »

It's a mystery to me then. I don't know what you did differently. I'll scrap it and start again, but I see you got all 4 of your tangents to show up. 2 of mine when away.

I made the 2 smaller circles, constrained the small circle diameters and distance, made the larger circles, and made tangents at each of the 4 locations. I tried it with and without the larger circles constrained.
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