Search found 3104 matches

by edwilliams16
Thu Mar 28, 2024 4:24 am
Forum: Help on using FreeCAD
Topic: Constraint sketch based on Part 3D information
Replies: 12
Views: 527

Re: Constraint sketch based on Part 3D information

i don't understand what you are talking about. le problem: I have two datum planes, both parallel to the Z axis. parallel ?? Planes aren't parallel to axes - they are orthogonal to them. Planes are defined by their normal vector and any point that lies on the plane. One plane, A, is coincident with ...
by edwilliams16
Thu Mar 28, 2024 2:01 am
Forum: Help on using FreeCAD
Topic: Constraint sketch based on Part 3D information
Replies: 12
Views: 527

Re: Constraint sketch based on Part 3D information

j8spencer wrote: Thu Mar 28, 2024 1:51 am Assuming I *can* select off-plane geometry, I'm curious to see how I form 3D constraints on an explicitly 2D sketch....
You probably want to look at https://wiki.freecad.org/Basic_Attachment_Tutorial This is one important way sketches get placed relative to existing geometry.
by edwilliams16
Wed Mar 27, 2024 8:07 pm
Forum: Help on using FreeCAD
Topic: Help with the 'union' command in WorkBench Part
Replies: 7
Views: 369

Re: Help with the 'union' command in WorkBench Part

Better to widen the distance between the holes slightly so the two struts don't touch. I just made them slightly non-concentric as a proof of principle. Likewise, you can lift the struts off the surface slightly if you don't want them to fuse into a single object, or move them inward if you do. Free...
by edwilliams16
Wed Mar 27, 2024 7:07 pm
Forum: Help on using FreeCAD
Topic: Help with the 'union' command in WorkBench Part
Replies: 7
Views: 369

Re: Help with the 'union' command in WorkBench Part

FreeCAD doesn't like surface to surface contact. Moving the objects a few microns can fix it - exaggerated here. Presumably the desired object would have some clearance here.
Screenshot 2024-03-27 at 9.02.42 AM.png
Screenshot 2024-03-27 at 9.02.42 AM.png (23.18 KiB) Viewed 74 times
by edwilliams16
Wed Mar 27, 2024 12:57 am
Forum: Python scripting and macros
Topic: Problem with "App::PropertyIntegerConstraint"
Replies: 4
Views: 394

Re: Problem with "App::PropertyIntegerConstraint"

Yes. If I save and restore, it no longer heeds the constraints.
by edwilliams16
Tue Mar 26, 2024 8:48 pm
Forum: Help on using FreeCAD
Topic: Help with the 'union' command in WorkBench Part
Replies: 7
Views: 369

Re: Help with the 'union' command in WorkBench Part

tacitosantos wrote: Tue Mar 26, 2024 3:19 pm Image
This can happen when you try to union objects which are only touching, not overlapped. Numerics can make this fail. Try adjusting to have a tiny (say 1 micron) overlap.
by edwilliams16
Tue Mar 26, 2024 12:16 am
Forum: Help on using FreeCAD
Topic: Constraining BSpline destroys control nodes.
Replies: 7
Views: 466

Re: Constraining BSpline destroys control nodes.

Chris_G wrote: Mon Mar 25, 2024 8:45 am This is done to avoid BSpline poles that would be outside of the bounding rectangle to interfere with the bounds calculation.
Thanks. I understand the problem
by edwilliams16
Mon Mar 25, 2024 4:18 am
Forum: Help on using FreeCAD
Topic: Two Face Sweep - One End Is Hollow [Solved]
Replies: 3
Views: 327

Re: Two Face Sweep - One End Is Hollow

It doesn't like this with a dangling spine at one end.
Screenshot 2024-03-24 at 6.15.27 PM.png
Screenshot 2024-03-24 at 6.15.27 PM.png (4.81 KiB) Viewed 285 times
Screenshot 2024-03-24 at 6.14.41 PM.png
Screenshot 2024-03-24 at 6.14.41 PM.png (7.8 KiB) Viewed 285 times
I attached medium_ring to profile and tilted it vertical.
by edwilliams16
Sun Mar 24, 2024 11:49 pm
Forum: Help on using FreeCAD
Topic: Swash Cylinder
Replies: 58
Views: 3737

Re: Swash Cylinder

I see - the cam opens a scissor like clamp. It occurs to me you might want the cam assymetric so it opens more slowly from the closed position where it is fighting the magnets. Here's a construction where you can specify the cam lift as a function of angle (actually circumference) in the sketch Mapp...