Filleting compound curves

[Vagulus]

After recently changing to the new version of FC
OS: Windows 10 (10.0)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.24276 (Git)
Build type: Release
Branch: (HEAD detached at 0.19.1)
Hash: a88db11e0a908f6e38f92bfc5187b13ebe470438
Python version: 3.8.8
Qt version: 5.12.9
Coin version: 4.0.0
OCC version: 7.4.0
Locale: English/New Zealand (en_NZ)
I decided to try the filleting tool where it wasn't working from a flat surface or a simple round end.

210624 Problem Fillets.png (46.16 KiB) Viewed 1074 times

(Get FCStd from https://1drv.ms/u/s!ArMxdUYEh9fKv30FFM7 ... c?e=o7Lr9m). I keep getting HTML Error when I try to attach it.)

To my delight, the arrowed fillets formed beautifully in the model but it stalled FC when exporting the STL file. When I removed the arrowed fillets the export was okay. Part --> Analyse geometry for errors shows problems with the arrowed fillets.

Has anyone else mentioned this problem? Is there an update/fix for this?

[chrisb]

I can confirm: the generation of the STL doesn't end.
I found that the fillets cause BOPcheck errors though.

[Vagulus]

I found that the fillets cause BOPcheck errors though.

I gather BOP (here) stands for Boolean Operations. Well, this mere mortal does not understand what BOP Checks do in the process of creating fillets in a digital model but, for interest's sake, I de-activated them in FC and tried again (working on the principle that if the BOP Checks were the cause of the problem then, if I don't do them I don't have the problem - taking a leaf out of the President Trump and Covid-19 playbook ). With this setting FC would not perform the filleting operation at the top (by the cylindrical ferrule) at all. Reactivating BOP Checks resulted in the same results as before - ferrules are modeled but FC goes into a loop when trying to create the STL file.

For a tie-rod end like this part having the fillets where arrowed would be a good feature so I have to ask, "Is there a work-around for this?"

[chrisb]

"Is there a work-around for this?"

You can try a sweep.

[Shalmeneser]

I keep getting HTML Error when I try to attach it.

File attachments are limited to 1MB in size.

[Vagulus]

File attachments are limited to 1MB in size.

That needs fixing! We're two decades into the 21st Century. What can you do with 1MB?

[chrisb]

That needs fixing! :shock

Did everybody pay for the files?

[Vagulus]

Did everybody pay for the files?

Who does pay for the files?

[chrisb]

Who does pay for the files?

The webspace is not for free. Jürgen Riegel, one of the founders, still pays for it.

[Vagulus]

The webspace is not for free.

If there is a contributors' list I'll throw in my Widow's Mite.
If there ain't, why ain't there?