Help needed for a clean boolean cut in curved surface

Hello everyone !

I am working on a piece where I need to make a three sided triangular cut on a curved surface.
I tried doing it in different ways with sweep1 but could’nt achieve a clean shape in the corners. I struggle to have a clean rail, and also struggle to make the boolean.

Anybody got ideas to achieve this clean cut ? should I stick with sweep1 and adjust a few parameters ? or use another command ?

Thank you for your attention and your help

Sweep1_process.3dm (510.2 KB)

Dear @Felicien.R

this is, what I find in your document:
can you please describe more precisely what the document you uploaded is showing ?
maybe use more layers ?
name them ? use colors ?

there are details with 0.30mm - your document tolerance is 0.01 mm
the rule of thumb is to have a factor 10 between details and doc tolerance:
0.01mm → no details below 0.1mm
so - this should work, but it is not generous.

is this what you re after ?


my workflow
_dupfaceBoarder
_offsetCrvOnSrf (i did 0.3 and 0.4 inwards)
_trim the 0.1 mm stripe
_shrinktrimmedSurface (the inner surface, to eliminate the degenerate, 0-length -edge)
_offsetSrf (0.3)
_loft 3x
_join

sweep1_process_better_loft.3dm (158.5 KB)

it depends a bit on what the data is used for, and how precise the inward chamfer / step has to be. - there are other workflows that balance those requirements for example for less precision regarding the chamfer/step / but better visual surface quality - and then use trimmed surfaces .

hope this helps - kind regards - tom

1 Like