Where is it broken? I cannot extrude.

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gooddealonly
Posts: 30
Joined: Wed Dec 15, 2021 2:36 am

Where is it broken? I cannot extrude.

Post by gooddealonly »

OS: Windows 10 Version 2009
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.24276 (Git)
Build type: Release
Branch: releases/FreeCAD-0-19
Hash: a88db11e0a908f6e38f92bfc5187b13ebe470438
Python version: 3.8.6+
Qt version: 5.15.1
Coin version: 4.0.1
OCC version: 7.5.0
Locale: English/United States (en_US)


I am a new FreeCAD 0.19 user
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Roy_043
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Re: Where is it broken? I cannot extrude.

Post by Roy_043 »

Use Sketcher_ValidateSketch to check your sketch. There are two gaps. The sketch is also not fully constrained, which is considered bad practice in general.
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NewJoker
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Re: Where is it broken? I cannot extrude.

Post by NewJoker »

A few points were not properly connected. You can see it if you drag them. Apply the coincident constraint to such points.

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gooddealonly
Posts: 30
Joined: Wed Dec 15, 2021 2:36 am

Where is it broken? I cannot extrude.

Post by gooddealonly »

I am a new user learning FreeCAD.

I am modeling a swimming pool part and get stuck with the issue of being unable to extrude and continue with the rest of the design. All the dimensions are hand measured with a digital caliper on the original part.
For the lowest sketch named Sketch005_flute, I want to extrude 12.5mm When I click on the Pad button, the object disappears, and the error message "Failed to validate broken face if I click OK. I then had to cancel the Pad action.
Questions:
!) I cannot find any broken line The sketch appears all green and ready to be extruded. Where is it broken?
2) I tried with the datum plane with the same result. I thought the sketch (Sketch005_flute) was larger than the selected surface of Pad004_body_1. that the datum plane may help.
3) There are 19 degrees of freedom. Is this causing the extrude issue?
4) How do I fix this?

Thanks.

OS: Windows 10 Version 2009
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.24276 (Git)
Build type: Release
Branch: releases/FreeCAD-0-19
Hash: a88db11e0a908f6e38f92bfc5187b13ebe470438
Python version: 3.8.6+
Qt version: 5.15.1
Coin version: 4.0.1
OCC version: 7.5.0
Locale: English/United States (en_US)

The FreeCAD is on a Windows 11 Pro 64-bit with 16GB RAM with 3Dconnexion Space Navigator.
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Bance
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Location: London

Re: Where is it broken? I cannot extrude.

Post by Bance »

gooddealonly wrote: Sun Jun 19, 2022 4:35 pmHow do I fix this?
Same problem as last time....

Make sure the sketch is closed (with constraints.)
drmacro
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Re: Where is it broken? I cannot extrude.

Post by drmacro »

Multiple missing end vertex constraints.

Overly complex sketch.
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heda
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Re: Where is it broken? I cannot extrude.

Post by heda »

there are a lot of broken sketches for new users.

why not make it so that the close button in the sketch automatically runs validate sketch for open verts?
would reduce number of posts on that topic, or at least elevate the question from "do not have a clue" - oh - is there something called "validate sketch" to "how to close the gaps in this sketch"...
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Zolko
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Re: Where is it broken? I cannot extrude.

Post by Zolko »

gooddealonly wrote: Sun Jun 19, 2022 4:35 pm I am a new user learning FreeCAD.
...
4) How do I fix this?
easy: use the Help forum.
try the Assembly4 workbench for FreCAD — tutorials here and here
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adrianinsaval
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Re: Where is it broken? I cannot extrude.

Post by adrianinsaval »

heda wrote: Sun Jun 19, 2022 6:33 pm there are a lot of broken sketches for new users.

why not make it so that the close button in the sketch automatically runs validate sketch for open verts?
would reduce number of posts on that topic, or at least elevate the question from "do not have a clue" - oh - is there something called "validate sketch" to "how to close the gaps in this sketch"...
there are a lot valid usecases for open sketches
gooddealonly
Posts: 30
Joined: Wed Dec 15, 2021 2:36 am

Re: Where is it broken? I cannot extrude.

Post by gooddealonly »

This is my first modeling of an object base on what limited FreeCAD I have learned so far. In my 2D thinking, I only think about breaking down the parts layer by layer on how to make each layer work and build on that. Of course, there are numerous ways to model this part, but I know very little.

I finished the design, exported and 3D printed the model. A few dimensions need to be changed. I am enjoying the process. FreeCAD is a complex software and it will take me a while to learn it.

Thank for the help and comments. I definitely will look into the sketch validation tool. I didn't even know about it.
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PopUpCleaner.jpg
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