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by ppemawm
Fri Nov 13, 2020 5:32 pm
Forum: Help on using FreeCAD
Topic: Dissaster after change pocket length
Replies: 3
Views: 195

Re: Dissaster after change pocket length

Change "Pocket006" length from 15mm to 10mm generate chain of disasters. That is because you have attached sketches and datums to model faces, edges, or vertices. This is to be avoided if you want a stable parametric model. There is much Forum documentation on this subject, e.g.: https://wiki.freec...
by ppemawm
Fri Nov 13, 2020 5:07 pm
Forum: Users Showcase
Topic: V0.19 Top Down Assembly Design Using Assembly4--Update #11
Replies: 65
Views: 13372

Re: V0.19 Top Down Assembly Design Using Assembly4--Update #10

The problem I see this way you cannot put static parts inside a rotatory sub-assembly; all parts of a rotatory sub-assembly have to rotate. That is exactly why I chose to organize it this way in the top-assembly file so it would be easier to animate the rotating parts. You could include stationary ...
by ppemawm
Wed Nov 11, 2020 9:29 pm
Forum: Help on using FreeCAD
Topic: Moving assemblys not definable in one sketch?
Replies: 3
Views: 147

Re: Moving assemblys not definable in one sketch?

...more complex motion? Any examples to look at? You might start with this: https://forum.freecadweb.org/viewtopic.php?f=24&t=42453&hilit=hexapod Or, something a little simpler: https://forum.freecadweb.org/viewtopic.php?f=24&t=48473&start=50#p439330 Or, something really tricky but doable: https://...
by ppemawm
Wed Nov 11, 2020 6:41 pm
Forum: Users Showcase
Topic: V0.19 Top Down Assembly Design Using Assembly4--Update #11
Replies: 65
Views: 13372

Re: V0.19 Top Down Assembly Design Using Assembly4--Update #10 Push Mower Sub-Assemblies

In the last project (Sterling Helicopter) all of the parts were created and assembled in one file. Although convenient in many respects it also gets to be quite cumbersome when the number of parts exceeds about twenty or so since the tree is longer than the screen is tall. An alternative to this is ...
by ppemawm
Thu Oct 29, 2020 3:30 pm
Forum: Open discussion
Topic: Bug? Vertex and edge numbers sometimes randomly change when a point of a line is dragged to a new position
Replies: 8
Views: 419

Re: Bug? Vertex and edge numbers sometimes randomly change when a point of a line is dragged to a new position

I must admit I have not succeeded in applying your suggested alternative approach. I tried as well with no complete success. I tried aapo's suggestion as well as a number of sketch constraint strategies. Actually, I am quite impressed that it does work as expected over quite a large range of change...
by ppemawm
Thu Oct 29, 2020 12:07 am
Forum: Open discussion
Topic: Bug? Vertex and edge numbers sometimes randomly change when a point of a line is dragged to a new position
Replies: 8
Views: 419

Re: Bug? Vertex and edge numbers sometimes randomly change when a point of a line is dragged to a new position

The problem is that the vertex numbers sometimes change location on the lines in the default view (not the Sketcher view). (Also the edge numbers sometime change numbers.) That causes the LCS (local coordinate systems) to move around (unpredictably) to some of the other locations and therefore the ...
by ppemawm
Mon Oct 26, 2020 2:17 pm
Forum: Users Showcase
Topic: FreeCAD _ LinkStage3: Design using the boolean tools in PartDesign workbench
Replies: 35
Views: 4383

Re: FreeCAD _ LinkStage3: Design using the boolean tools in PartDesign workbench

I think @ppemawm could have suggestions about in place modelling and the new tools. He is the master of it. Hardly so, but I do appreciate your kind comment. You yourself must be quickly becoming an Asm3 master. I certainly envy your assembly models and find your videos quite intriguing. I am not a...
by ppemawm
Sun Oct 25, 2020 12:28 am
Forum: Assembly
Topic: Assembly with two copies of a linkage - help!?
Replies: 3
Views: 266

Re: Assembly with two copies of a linkage - help!?

My question is, what seems to be the most sensible way with Assembly4 to bind one instance of the 4 bar linkage to one plane, and the other to a different plane that's parallel to the first, but offset by some distance? You can use Draft > OrthoArray > Link Array https://wiki.freecadweb.org/Draft_O...
by ppemawm
Wed Oct 21, 2020 2:59 pm
Forum: Assembly
Topic: Assembly 4 workbench
Replies: 888
Views: 126750

Re: Assembly 4 workbench

I wouldn't have splitted the sub-assemblies like that. I'd put in a sub-assembly only rigid structures, that don't deform/move. So, the rotor would be one such sub-assembly, and not all rotating parts. Does that make sense ? Thanks for your comments. Yeah that makes more sense. I.e. all of the part...
by ppemawm
Wed Oct 21, 2020 12:22 am
Forum: Assembly
Topic: Assembly 4 workbench
Replies: 888
Views: 126750

Re: Assembly 4 workbench

Would you be willing to share the Model tree here so we can have a look at how you organised sub-assemblies ? Please see attached file. Model_Top-Level-Assy_Tree.pdf What did you try ? I placed (copy/paste with all dependencies from original file) all of the moving parts in subassembly files: rotat...

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