FreeCAD Forum

bambuko wrote: ↑Mon May 23, 2022 11:50 am since how do you expect solver to solve something that is not solvable because of errors

That errors are after the placement is calculated. If the proper placement was calculated all else should work out and there shouldnt be any errors (apart from some TN weirdness, but again this should not affect placement).

That's simply not how it works, when there is a failure in a dependency the entire object is not recomputed (and the placement is a property of the shape actually). FreeCAD doesn't detect per property dependencies but at the object level. And like I said, the issue in your file is not the outdated expression, it's the fillet, try clearing the expression in the body placement and manually changing the value to -21.6, the model is still broken and recomputation still stops at the fillet, to get it working you must fix/remove the fillet.

That errors are after the placement is calculated.

I don't think this is true, from my understanding, the body is in the recompute queue after everything else inside it, not before.

bambuko wrote: ↑Mon May 23, 2022 8:55 am ..

in my opinion you can build very stable parametric models with controlling bodies from part or lines and points from draft, which control sketches. another advantage is that it can be controlled 3-dimensionally at one point

here is an example



https://forum.freecadweb.org/viewtopic. ... 61#p596961

thomas-neemann wrote: ↑Mon May 23, 2022 3:49 pm ...in my opinion...

Everybody on internet has an opinion
You are perfectly entitled to have yours...

(I also have one )

thomas-neemann wrote: ↑Mon May 23, 2022 3:49 pm in my opinion you can build very stable parametric models with controlling bodies from part or lines and points from draft, which control sketches. another advantage is that it can be controlled 3-dimensionally at one point

Absolutely, sketches are just more convenient