Changing spreadsheet value not working as expected

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ve9gj
Posts: 2
Joined: Sun Feb 09, 2020 1:29 pm

Changing spreadsheet value not working as expected

Post by ve9gj » Sun Mar 29, 2020 10:23 pm

OS: Ubuntu 18.04.4 LTS
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.4.
Build type: Release
Python version: 3.6.8
Qt version: 5.9.5
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/Canada (en_CA)

Hi
FreeCad newbie here wondering what I am doing wrong.

I have been working on a more complex project for 3D printing and I started using the spreadsheet tool to set dimensions.
If I change a dimension in the spreadsheet my whole project blows up. I am sure I have done something wrong and this has happened to me a couple of times so far. The attached file is what i have been working on in Part design to give an example.
Look at Sketch018. everything looks OK
Now I change the value in spreadsheet row 12 "Side Wall Thickness Dove" from 10 to 15 it seems to break a lot of sketches.
Spreadsheet row 1 OuterW increase by 5mm as it should.
Now if I view Sketch018 it looks like it is on a different plane and my project is now borked big time.

Any suggestions on what i am messing up?

TIA
Glenn
Attachments
BatBox LH V5.FCStd
(444.88 KiB) Downloaded 2 times
TheMarkster
Posts: 1353
Joined: Thu Apr 05, 2018 1:53 am

Re: Changing spreadsheet value not working as expected

Post by TheMarkster » Sun Mar 29, 2020 11:55 pm

This is why you should not be attaching sketches to faces. For example, instead of attaching Sketch018 to that face attach it to the xy_plane and set it's attachment z offset to Spreadsheet.OuterH + Spreadsheet.BotThick. There are other sketches that probably need to be similarly re-attached to one of the major planes. Fillets are also somewhat finicky, but I think your main problem is the topological naming issue.
My FreeCAD video series on youtube: https://www.youtube.com/c/mwganson
chrisb
Posts: 24234
Joined: Tue Mar 17, 2015 9:14 am

Re: Changing spreadsheet value not working as expected

Post by chrisb » Mon Mar 30, 2020 12:24 am

TheMarkster wrote:
Sun Mar 29, 2020 11:55 pm
your main problem is the topological naming issue.
See topological naming problem.
ve9gj
Posts: 2
Joined: Sun Feb 09, 2020 1:29 pm

Re: Changing spreadsheet value not working as expected

Post by ve9gj » Tue Mar 31, 2020 1:52 pm

Thanks for looking at it. I thought attaching a sketch to a face was the proper way to do it. Part of learning I guess.

Glenn
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