@meme2704: The sheet flat and rolled was more to describe, not the way I actually want to do this. Anyway: I think I found the final solution! By using: - FCv0.16 (no, not FCv0.17) - Designing the right sketch :D - "Wrapping a sketch around a cylinder"-macro - Cutout of the part created needs to be ...

I searched the forum using chrisb's tip:

Search the forum on how to map a sketch to a cylinder

And then I found this: https://forum.freecadweb.org/viewtopic. ... 0&start=20

Could be interesting!

If I was able to write code, this is the opportunity to create a tube-laser WB

Perhaps you can find a solution based on the following thoughts: - Search the forum on how to map a sketch to a cylinder - Map the sketch to the inside of your tube - map it enlarged on the outside - make a subtractive loft. Something like this. I did not map the faces, it's only to show the loft: ...

I also discovered that Partdesign Next (FC V0.17) is quite an improval to Part Design. Cutting cone shapes out of a hollow tube works without errors in the outcome. I definately have to get familiar with this. However, I find it difficult to make the switch to PDNext using older drawings... Still, P...

Perhaps you already know this but I want to write it just in case it will help you: As a workaround to your problem I can inform that there are tube laser cutters nowadays that have tilting laser beam so you do not have to make the cut perpendicular to the surface of the pipe to be able to manufact...

I have thought it over With help of your tips, meme2704, I tried something with actually works as in reality. Using a cone upside down and tilted under an angle (if you look from the side, one of the sides of the cone will be vertical). But getting the right angle is undoable. Then I tried to make a...

meme2704 wrote: ↑

Thu Nov 15, 2018 10:38 am

I reread your questions
with Fc, is not possible to make the form "flat"
With Sheetmetal Wb no longer because the cut is in the rolled part, it causes a crash when we want to use the Unbend function

Yeah. I noticed already... Thanks

meme2704; thanks for your approach! I like the way you did this. It leads the way to solvation. But have the feeling your approach is not 100% correct... I could be wrong. but I am not sure... It is hard to explain... :x You have created a cutout piece with a curve on a flat plane, but the real plan...

I have two questions: Is there a good reason why you still use FreeCAD 0.16? There are so many enhancements and bugfixes that I strongly recommend to upgrade. I'm not familiar with lasercutters, but if you talk about rotating the tube, isn't that beyond 2.5D, where you move essentially in the XY pl...

Hi, I want to create an angled slot in a hollow tube. To make it worse: An opposite angled slot is also necessary... The blue pin needs to travel thought the slot on both sides of the tube... :geek: I would like to draw it exactly if the cutout has been done using a tube lasercutting machine, with t...