Looks like your post has been inadvertently missed, but hopefully you are still checking for an answer.topyra wrote: ↑Thu Nov 12, 2020 10:51 pmI would like to create an axis that would go from one part in model to another part...there is an Axis_1 that I intended to go from Tube001.Edge5 (far end of bottom arm) to Tube002.Edge5 (top mount).
But unfortunately I am not able to do this - axle do not go thru end of bottom arm (Link001).
There are numerous problems with your model from my perspective. Assembly4 is primarily intended for modeling with PartDesign workbench although you should be able to assemble legitimate objects in a part container. After this first attempt you should probably go back and review the Assembly4 documentation and tutorials. It is my recommendation that you create each part in an Assembly4 body which automatically creates a default LCS and takes you into PartDesign. I rarely use the Part workbench so cannot offer any advice if you prefer to use that approach.
I could not sort out why you are not able to attach the reference axis. It is not recommended to attach LCS or datum to feature edges, vertices, or faces if you want a stable parametric model. If you make changes to any of the features these references may be lost and then the assembly will blow up.
I suggest the following Assembly4 proven approach:
OS: Windows 10 (10.0)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.22894 (Git)
Build type: Release
Python version: 3.6.8
Qt version: 5.12.1
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/United States (en_US)