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I would like to learn how cut a mesh getting a flat surface automatically, so I can 3d print it on that flat surface, and then, have a nice surface to glue both parts after 3D printing them.

I know how to achieve those results on tinkercad, but there should be a way of achieving this, without leaving blender.

Form this model:

enter image description here

I want to achieve this:

enter image description here

What I do to fill the rear is boolean a square, to get the inner shape of the rear.

enter image description here

I get this result

enter image description here Then I export the model to tinkercad, and cut it.

I try to do the same thing I do using tinkercad on blender

enter image description here

But as you can see I get a gap. This is not printable. enter image description here

I fill the gap:

enter image description here

But when I slice the model there is something weird with the model

enter image description here

Any experts here know how to achieve this propperly without leaving Blender?

Thanks for reading this!

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  • $\begingroup$ have you tried the Bisect tool in Edit mode? Also the Line Project in Sculpt mode $\endgroup$
    – moonboots
    Jun 5, 2021 at 13:49
  • $\begingroup$ It looks like having used a solidifying modifier instead of starting with a base mesh that is already solidified would have been helpful, but I’m not sure how easy that would be to backpedal or if it would be even possible. Do check out bisect. $\endgroup$
    – TheLabCat
    Jun 5, 2021 at 21:15

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