Cannot Pad Sketch - getWireDirection Error

[code-surfer-dev]

I am a noob at FreeCAD, and am running the following:

Code: Select all

OS: macOS 10.16
Word size of FreeCAD: 64-bit
Version: 0.20.1.29410 (Git)
Build type: Release
Branch: (HEAD detached at 0.20.1)
Hash: f5d13554ecc7a456fb6e970568ae5c74ba727563
Python 3.10.5, Qt 5.15.4, Coin 4.0.0, Vtk 9.1.0, OCC 7.6.2
Locale: C/Default (C)

My sketch is fully constrained and closed, and when I try to pad my sketch, I get the following error:

getWireDirection: Failed to create face from wire, Internal name: Pad

I have tried searching the forums for different variations on the error message, but cannot find any other posts, although I figure someone else must have had the same problem before, so apologies in advance for that. I have attached a screenshot and a copy of my file. Any help is greatly appreciated.

Many thanks!

[drmacro]

The sketch is WAY too complicated. Make multiple sketches.

And, as it is would create multiple solids with Pad.

When you create a PD Body, you have defined a container that will contain a single, solitary, cumulative solid. Each feature (Pad/Pocket/etc. operation) in the Body is cumulative (and the result of each feature is NOT an atomic solid). The result of each feature MUST result in a single solitary solid (that is an accumulation of it's predecessors).

[Roy_043]

In the notch on the right there is a circle with R=0.

[Bance]

That sketch is so complex so as to be useless for anything as can be seen by the fact that you can't figure out where the error is.

Can you tell me where circle no 42 is and why it has a 0mm radius?

[GeneFC]

If the zero-radius circle is removed the sketch pads without error.

Capture.JPG (27.52 KiB) Viewed 828 times

Yes, the sketch is rather complex, but otherwise there is no real error.

Gene

[code-surfer-dev]

Thank you Roy_043, Bance, & Gene!

I thought the dot (the circle with a radius of 0) was a point that was showing up due to a glitch in the view LOL.

If @Bance hadn't mentioned that it was Circle 42, I would never have found it. I tried looking through all of the constraints to find a radius constraint of zero, but couldn't see one. If any circle is missing a radius constraint wouldn't that come up as an error, or was the circles radius constrained by it's center?

I'm confused, any advice on how I would locate the zero radius circle on my own in the future would be greatly appreciated.

[Shalmeneser]

This sketch kills FC multiple time.
Suppress the 'point' at the right side.

[drmacro]

As it happens a point would not have caused the issue, but, as noted a 0 radius circle does.

I would reiterate what I and others said.

Doing this in a single sketch is WAY too complicated. Hundreds of constraints are too extremely tedious to create and difficult to maintain. And making a modification is bound to be a headache.

There are symmetries which also would lighten your work.

[Shalmeneser]

I'm such a noob trying to use Draft_PointLinkArray.
Part wb is not my best wb.

[code-surfer-dev]

There are symmetries which also would lighten your work.

Many thanks drmacro, I agree on using symmetries and will try that the next time I do something this complex.

Many thanks to everyone else for your feedback.