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From: krass
25 Nov 2021   [#11] In reply to [#6]
Michael, colleagues, hello!
I keep trying other methods for creating a bath.

With curves, it would seem to work out well... but there is a problem:
when creating a shell (thickness 0.4), the geometry is broken.
And I can't figure out what the problem is. ((
Any advice would be grateful.


Attachments:
vann3.3dm

Image Attachments:
Screenshot_12.png  Screenshot_19.png 


From: Frenchy Pilou (PILOU)
25 Nov 2021   [#12] In reply to [#11]
Make it like this in 3 steps pass ! (separate all first)
(i don't know why that works like this! :)
If the top faces are not like your wish you can make some Boolean Diff by a plane or other lines!


From: Michael Gibson
25 Nov 2021   [#13] In reply to [#11]
Hi krass, the Shell function in Moi is pretty limited, it can only thicken a surface that is smooth.

Your shape has creased edges between faces instead of being smooth. When surfaces or curves are offset, the result generated from the offsets will only touch each other automatically at smooth areas. Offsets at a creased spot will have a gap between them as illustrated here:





To fill in this gap the offsets need to be extended and intersected with each other. For surfaces that is a complex process and isn't handled very well by the geometry library that MoI currently uses.

So Shell won't be usable for the kind of geometry that you've created here, to create thickness here you will instead need to model the inside walls directly in a similar way that you've modeled the starting surface, then loft between the edges to build "side walls" and use Join to glue the pieces together.

You might want to try using Construct > Blend to put in the corner pieces for this shape, that will make smooth results that should then have a better chance at being shelled, see attached .3dm . Also to get a flat top you would want to make it a solid with the top capped off and then select that top face as the opening for the shell.

- Michael

Attachments:
vann3_blend_corners.3dm

Image Attachments:
krass_offset1.jpg  krass_offset2.jpg 


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