Recompute failed! Please check report view.

[FUEL4EP]

Hello,

I am trying to change some parameters in the config file of the Thingiverse FreecAD model 'fcstd
twisted_savonius.fcstd' (I am not the creator of this model)

https://www.thingiverse.com/download:5794947

However, when I try to change the radius from 50 mm to any other value I am getting error messages:

Code: Select all

Sketch Sketch001 has partially redundant constraints!
PartDesign::AdditivePipe: Link(s) to object(s) 'Helix' go out of the allowed scope 'AdditivePipe'. Instead, the linked object(s) reside within 'N/A'.
Recompute failed! Please check report view.

savonius.png (146.84 KiB) Viewed 18535 times

The used FreeCAD version is today's daily build:

Code: Select all

OS: Ubuntu 18.04.6 LTS (KDE/plasma)
Word size of FreeCAD: 64-bit
Version: 0.20.
Build type: Release
Branch: unknown
Hash: b9b21ddac562f03cef162bb1f7feb4eea3de8b1e
Python 3.6.9, Qt 5.9.5, Coin 4.0.0a, OCC 7.5.2
Locale: German/Germany (de_DE)
Installed mods: 
  * A2plus 0.4.56
  * ExplodedAssembly

Can you help to overcome the error message, please?

Thanks a lot in advance.

[thomas-neemann]

...

when i open it with realthunder i get this message

Failed to recompute twisted_savonius#Sketch001: Sketch with redundant constraints
Please remove the following redundant constraints:13
, 36

[FUEL4EP]

Hi Thomas,

Thanks for your initial feedback.

Sorry, I forgot to mention that I also had to delete the two redundant constraints yo were facing to, too.

The reported error above occurs after having deleted the two redundant constraints:

twisted_savonius.fcstd

(395.41 KiB) Downloaded 76 times

[thomas-neemann]

Hi Thomas,

Thanks for your initial feedback.

Sorry, I forgot to mention that I also had to delete the two redundant constraints yo were facing to, too.

The reported error above occurs after having deleted the two redundant constraints.

it seems to have been created in 0.17. the sketcher has changed a lot. I will test it in 0.17

Bildschirmfoto_2022-06-08_14-29-38.png (6.52 KiB) Viewed 18470 times

[thomas-neemann]

...

in this version, it worked



OS: Ubuntu 20.04.1 LTS
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.17.13541 (Git) AppImage
Build type: None
Branch: releases/FreeCAD-0-17
Hash: 9948ee4f1570df9216862a79705afb367b2c6ffb
Python version: 2.7.6
Qt version: 4.8.6
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: German/Germany (de_DE)

Bildschirmfoto_2022-06-08_14-40-10.png (20.22 KiB) Viewed 18453 times

[bambuko]

Sketch with redundant constraints
Please remove the following redundant constraints:13, 36

This is very common on models created in older versions of FreeCAD.
As I understand it they were not very good at identifying redundant constraints....
I recently have opened quite a few files created in 16 or 17 and they all had these problems

[FUEL4EP]

Great, Thomas!

Switching back to FreeCAD-0-17 would be a fallback solution.

Is there an (easy) way to get the model working with FreeCAD 0.20 ?

[thomas-neemann]

...

Yes, that's why I recommend keeping the freecad versions used so that you can still work in the files (years) later

[drmacro]

Great, Thomas!

Switching back to FreeCAD-0-17 would be a fallback solution.

Is there an (easy) way to get the model working with FreeCAD 0.20 ?

It would probably be better to just model it in 0.20 with the Part Design Helix tool.

In addition to the redundant constraints, the last sketch has no support, the 3 helix are outside the body (thus the out of scope warnings).

[bambuko]

Yes, that's why I recommend keeping the freecad versions used so that you can still work in the files (years) later

It's always more desirable (and easy) to sort things out properly rather than relying on using outdated old versions of FreeCAD.
Using old versions of FreeCAD doesn't make file in questions less corrupted or less faulty - it just hides the problems