Fillet TNP issue any antivenom ?

Post here for help on using FreeCAD's graphical user interface (GUI).
Forum rules
and Helpful information
IMPORTANT: Please click here and read this first, before asking for help

Also, be nice to others! Read the FreeCAD code of conduct!
Post Reply
johnstonf
Posts: 78
Joined: Fri Oct 28, 2022 6:25 pm
Location: CA

Fillet TNP issue any antivenom ?

Post by johnstonf »

I just learned that the TNP is also an issue with fillets...

My document seems to have gotten bitten by the TPN snake.

Is there any repair that can be ran?
(Or do I have to redo my model?? Argh)

How do you handle changes you need to make after fillets are applied?
(Is it safe to delete them, make changes, redo fillets?)

This TPN thing is going to be the end of me LoL...

Thanks
Ulicad
Posts: 311
Joined: Tue Aug 16, 2022 10:35 am
Location: de_DE

Re: Fillet TNP issue any antivenom ?

Post by Ulicad »

Hello johnstonf,
being myself a beginner, I truly can feel your pains ... :|

Even though it's only a draft, you may find the informations where to look for in this topic: Help-links on unexpected behaviour of FreeCAD (TNP-related) [Draft]

Hope it helps!
Last edited by Ulicad on Thu Mar 30, 2023 6:04 am, edited 1 time in total.
Regards, Ulicad / Uli
---
en: New FC-user, virgin to previous CAD-work, labouring on his new hobby Ulis Blog
de: Neuer FC-Nutzer, ohne vorhergehende CAD-Erfahrung, beschäftigt mit seinem neuen Hobby Ulis Blog
User avatar
Shalmeneser
Veteran
Posts: 9475
Joined: Wed Dec 23, 2020 12:04 am
Location: Fr

Re: Fillet TNP issue any antivenom ?

Post by Shalmeneser »

johnstonf wrote: Thu Mar 30, 2023 3:28 am How do you handle changes you need to make after fillets are applied?
(Is it safe to delete them, make changes, redo fillets?)
Save your file and try.
You can do fillets inside sketch, it will not suffer from TNP.
Do fillet the more upstream (less chance of modification) or more downstrea (but you need to redo it each time).
chrisb
Veteran
Posts: 53930
Joined: Tue Mar 17, 2015 9:14 am

Re: Fillet TNP issue any antivenom ?

Post by chrisb »

johnstonf wrote: Thu Mar 30, 2023 3:28 am Is there any repair that can be ran?
(Or do I have to redo my model?? Argh)

How do you handle changes you need to make after fillets are applied?
(Is it safe to delete them, make changes, redo fillets?)
You can redo the fillets by double clicking on the filet in the tree. If you have built the rest of the model as stable as possible, this works rather well.
I am one of the few guys here to recommend to add fillets as early as possible into the model. This is of course only advised, if you make the rest as stable as possible, i.e. never ever attach a sketch to a face or reference an edge of a generated feature.
A Sketcher Lecture with in-depth information is available in English, auf Deutsch, en français, en español.
johnstonf
Posts: 78
Joined: Fri Oct 28, 2022 6:25 pm
Location: CA

Re: Fillet TNP issue any antivenom ?

Post by johnstonf »

Shalmeneser wrote: Thu Mar 30, 2023 5:16 am
johnstonf wrote: Thu Mar 30, 2023 3:28 am How do you handle changes you need to make after fillets are applied?
(Is it safe to delete them, make changes, redo fillets?)
re: You can do fillets inside sketch, it will not suffer from TNP.
I didn't know about that, thanks!

Save your file and try.
You can do fillets inside sketch, it will not suffer from TNP.
Do fillet the more upstream (less chance of modification) or more downstrea (but you need to redo it each time).
User avatar
onekk
Veteran
Posts: 6146
Joined: Sat Jan 17, 2015 7:48 am
Contact:

Re: Fillet TNP issue any antivenom ?

Post by onekk »

There is around a wiki page about TNP reporting some advices to reduce the risk to be bitten by TNP.

Search for TNP in Wiki and you will probably find it.

Regards

Carlo D.
GitHub page: https://github.com/onekk/freecad-doc.
- In deep articles on FreeCAD.
- Learning how to model with scripting.
- Various other stuffs.

Blog: https://okkmkblog.wordpress.com/
Post Reply