Mirorring Parts Assembly3

Mods Assembly
1

How can I mirror a group of parts assembled with Assembly3 using a datum plane as reference?

Thanks for your help

OS: Windows 10 (10.0)
Word size of FreeCAD: 64-bit
Version: 0.20.26375 (Git)
Build type: Release
Python version: 3.8.12
Qt version: 5.12.9
Coin version: 4.0.0
OCC version: 7.5.3
Locale: English/United States (en_US)

2

For mirroring I use a link with scale of -1 without datum plane,
using placement after linking.
BTW what do you mean (precisely) “group of parts” ?
Terminology in FreeCAD, particularly the word “part” can be confusing…

3

Thanks for your answer:
group of parts: several parts assembled together with constraints

Is it possible to do a link with datum plane???

4

so, that’s an assembly?

…Is it possible to do a link with datum plane???..

sounds like you don’t know how the link works?
and… why do you think that you need a plane?

Perhaps if you share FreeCAD file I might be able to better understand what you are trying to do and help you?

5

scaling -1 is NOT a mirror symmetry, it is a centre of inversion. You need to combine with a 180 degree rotation about one axis.
Thanks for the idea though, I was not aware of the scale property.

6

indeed that is the case!
I did say:

…link with scale of -1 … > using placement after linking> …

I guess I wasn’t precise enough - your detailed clarification helps :wink: