'snap-to' sketcher position

[Mi244]

Is there a way to snap the centre of the sketch to the centre of the object I have brought into the sketch, as below?

I know I can move things manually, but there are times you want absolute accuracy, and I find it difficult to establish center reference..

[chrisb]

That's done outside of Sketcher with a concentric attachment.

[Syres]

To slightly expand on chris explanation, first select the circular edge you want the new sketch to be based on and then click the New Sketch icon which will bring up the attachment dialog as per screenshot below:

CreateSketchConcentric.png (23.08 KiB) Viewed 463 times

Code: Select all

OS: Linux Mint 20.3 (X-Cinnamon/cinnamon)
Word size of FreeCAD: 64-bit
Version: 0.21.30509 (Git)
Build type: Release
Branch: master
Hash: 8a77ea8c989550566246d37916affe7c4c0dc351
Python 3.8.10, Qt 5.12.8, Coin 4.0.0, Vtk 7.1.1, OCC 7.3.0
Locale: English/United Kingdom (en_GB)
Installed mods: 
  * ThreadProfile 1.83.0
  * A2plus 0.4.59
  * Curves 0.5.8
  * ExtremeProDark 1.0.4
  * Plot 2022.4.17
  * fasteners 0.4.6
  * sheetmetal 0.2.57

[Mi244]

Ah brilliant, thanks folks

[thomas-neemann]

...

is that helpful?

https://www.youtube.com/watch?v=bP9EidEXylI

phpBB [video]