You can use after the Separate the native hidden function ExplodeMove then Shell
(Press TAB and write ExplodMove)
For Example 2
Not sure that the inverse ExplodeMove (0,5) will works perfectly because maybe some pieces are not clean...but you will have an half base! :)

So yeah the variable radius fillet part is also problematic for offset/shell because it's not smooth to its adjacent surfaces:





Was that part maybe made by patching in with a network surface instead of from a fillet? Anyway it's not smooth there and that adds a lot of complexity to doing surface offsetting because only surfaces that are smooth to each other will produce offsets that naturally touch each other. Offset surfaces at sharp edges will have gaps between the offsets.

So one thing you could do would be to leave out that transitional fillet piece from the individual surface offsetting described above and patch it in doing Network on the offset pieces instead.

- Michael

Hi albehany, here's a version that I generated using the above steps - Edit > Separate, then offset surfaces (excluding transitional fillets), Extrude and Planar to make side walls, then Network to fill in the spots on the offset for the transition fillets.

You would probably get better quality in those spots by applying fillets at the end instead of having them in place prior to offsetting.

- Michael

Hi Pilou,

re:
> You can use after the Separate the native hidden function ExplodeMove then Shell

I would not recommend that because then you would have a whole bunch of solids with overlapping surface areas that would need to be removed. When trying to do a boolean on something like that it makes it difficult because you're telling it to make surface/surface intersections on many coincident or nearly coincident pieces.

That's why it's better to do an offset of the individual surfaces to make a surface result to combine using Join and not try to make a whole bunch of individual solids for this kind of case.

- Michael

Sure that was just theorical for a speedy method not one by one... :)

I will study your method!

Thank you so much guys. this is really useful.

Hi Michael, I try your solution and it's work good only small problem I have any idea how to avoid it. see the attached image please. Thank you

Hi albehany, yes those are the areas that I mentioned above that are not smooth on the original model. Surfaces that are not smooth to each other will have gaps between them when they are offset.

So to complete your model you should not offset those surfaces that are blending between different fillet radii, instead build a Network surface from the 4 surrounding offset surfaces.

Or some other things you could try are filling in the gaps you show using Construct > Blend, or trying to apply a fillet to those edges on the base model so it's smooth there so the offsets will naturally meet each other.

It may be better to wait to apply fillets until after constructing the offset rather than putting them on before where they need to be offset as well.

- Michael

Thank you Michael.