I also have no clue what might be wrong, in this case. I've used this method a number of times & it normally works quite well. I *will* try to move forward with the file you posted, though - many thanks for uploading! 8-) If it fails again on me, I'll finish this up in another application - I'll...

One step forward, 2 steps back? :lol: it worked.JPG Don't really understand how it triggers the issue, but it seems that removing the bore in the pipe solves the issue of the disappearing material. However.... When placing the bore back, now that the thread issue is solved, the entire object disappe...

This is a tricky one... Thanks for looking into this with me, people - it's really appreciated & we're not there yet... 8-) :roll: I've rebuilt the model, omitting the chamfers & whatnot until lateron (updated file's attached) . At this stage, when checking the geometry, both the main body (...

Thanks for helping out here, but it seems that there is something else, still? I narrowed it down to 1.75. but the material is still disappearing.

Did you make other changes, than only the width, maybe?

OS: Windows 8 Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.16.6700 (Git) Build type: Release Branch: releases/FreeCAD-0-16 Hash: 7b925d11aa69ac405b423635adb1e2833f18a817 Python version: 2.7.8 Qt version: 4.8.6 Coin version: 4.0.0a OCC version: 6.8.0.oce-0.17 Hi, hope you can give ...

Apologies for not posting feedback on your support sooner, but life kinda got in the way. :roll: 8-) Again, thanks for the replies given - I really do appreciate the support here in the forum. I opted to go with Bejant's proposal for this one & it worked exactly as described. I really appreciate...

Thanks for the responses, guys - much appreciated!

I'll be home in a few hours, then I'll get to work with this. I'll confirm asap.

Thanks & cheers,

Harry D.

My FreeCAD details: OS: Windows 8 Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.16.6700 (Git) Build type: Release Branch: releases/FreeCAD-0-16 Hash: 7b925d11aa69ac405b423635adb1e2833f18a817 Python version: 2.7.8 Qt version: 4.8.6 Coin version: 4.0.0a OCC version: 6.8.0.oce-0.17 H...

Für den Export nach STL gibt es keine Möglichkeit Kanten zu glätten. Das Dreiecksnetz ist eigentlich nur eine Approximation des mathematischen exakten Modells und wenn man ein genaueres Netz haben will, geht das nur, wenn man die Tessellierung selbst durchführt und nicht dem Export überlässt. Dazu ...

Hi Triplus, all, Conversion into a 2D drawing, as described, is going fairly well. Have a few things to learn, I think, but still. :D However, I read in the other thread, referred to above, about the flipped arcs: I also seem to have a case of that. Is there a way to work around that? BCV 3 HF Pisto...