Can't extrude face

[freecc]

I couldn't upload the freecad file because it was too big for the forum to accept. As you see it is extruded and the shape is randomly made with b-splines in sketcher, i.e. the shapes of the centrodes (the pitch line of the gear)
Note that the shape is random, I am testing. All I want is to extrude the shape with inner teeth. Why doesn't it work? I extruded a gear with outer teeth made out of 3000-4000 cuts.
The gear in the pic is made out of 380 cuts and took 30-40 minutes on a 12 year old CPU. Script has adjustable backlash to the sides and up/down for the teeth.
But all i want is to extrude the inner teeth!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! help please

[chrisb]

Can you upload a file with one tooth? I tried a check geometry with your previous file but it took forever and I cancelled it.

[UR_]

Is it this, what you expect?

Screenshot.png (16.1 KiB) Viewed 1855 times

used PartWB:Offset3D for this

Properties.png (8.01 KiB) Viewed 1855 times

file:
https://1drv.ms/u/s!AnXv4gi_KqtPdJnspazgn-6ih3A


Done with:
OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.13588 (Git)
Build type: Release
Branch: master
Hash: 1e2b9758cc7f6872da018ee71983a82499866508
Python version: 2.7.14
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.2.0
Locale: German/Germany (de_DE)

[freecc]

Is it this, what you expect?


Screenshot.png


used PartWB:Offset3D for this
Properties.png


file:
https://1drv.ms/u/s!AnXv4gi_KqtPdJnspazgn-6ih3A


Done with:
OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.13588 (Git)
Build type: Release
Branch: master
Hash: 1e2b9758cc7f6872da018ee71983a82499866508
Python version: 2.7.14
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.2.0
Locale: German/Germany (de_DE)

exactly what I wanted! I opened your file and on my computer it has failed, I am attaching a picture, very strange. I will try using offset3d also. Thanks for your help! This could be something.

OS: Ubuntu 16.04.4 LTS
Word size of OS: 32-bit
Word size of FreeCAD: 32-bit
Version: 0.17.13519 (Git)
Build type: None
Branch: releases/FreeCAD-0-17
Hash: 1a8b868018f45ea486c0023fdbfeb06febc1fb89
Python version: 2.7.12
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.2.0
Locale: Swedish/Sweden (sv_SE)

[freecc]

Can you upload a file with one tooth? I tried a check geometry with your previous file but it took forever and I cancelled it.

I am sorry I can't do that, it is not generated like that. The geometry extrudes when it is not a hole.
picture is:
square face subtract original face, extrude.

not complete, just testing the process of making inner teeth, but it shows geometry is ok, no?

[chrisb]

UR_: That's how it looks here. I opened it and changed nothing and it still is not solid.

OS: Mac OS X
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.13651 (Git)
Build type: Release
Branch: (HEAD detached at 4604bd9)
Hash: 4604bd9456688e6108b1b5f1a0dcc7f8d205555f
Python version: 2.7.14
Qt version: 5.10.1
Coin version: 4.0.0a
OCC version: 7.2.0
Locale: German/Germany (de_DE)

[chrisb]

Can you upload a file with one tooth? I tried a check geometry with your previous file but it took forever and I cancelled it.

I am sorry I can't do that, it is not generated like that. The geometry extrudes when it is not a hole.

Ok, so can you upload a file with a number of teeth in a hole as small as possible?

[freecc]

Can you upload a file with one tooth? I tried a check geometry with your previous file but it took forever and I cancelled it.

I am sorry I can't do that, it is not generated like that. The geometry extrudes when it is not a hole.

Ok, so can you upload a file with a number of teeth in a hole as small as possible?

yes I could do that but it would take some time, I will run a check geometry and post the result.

[UR_]

I opened it and changed nothing and it still is not solid.

OCC thinks it's a solid

Code: Select all

obj = App.getDocument("kuggkuggkugg_ur").getObject("Offset")
>>> obj.Shape.Solids
[<Solid object at 000001EDFE2D48B0>]

And now the funny part:
If i open my file, it looks like shown in your post (hollow)
Then open Menu->Edit->Preferences
Change nothing
Hit [Ok] button to leave
Now it looks like a solid
I believe this is a coin thingy

[UR_]

This helps too:

Code: Select all

obj = App.getDocument("kuggkuggkugg_ur").getObject("Offset")
obj.ViewObject.update()