Selective Botton Layers?

[pzzs7f1960 0]

Below is what I want to print.

 

Below is what Cura is slicing. I don't want a bottom FIRST layer. I do want subsequent bottom layers printed but Cura won't do it.

 

Works great except I don't want the initial first yellow layer (red X). Other top/bottom layers I want (green Check).

Also below bottom view shows where I don't want yellow layer and where I do want it (green).

Edited October 21, 2021 by pzzs7f1960

[GregValiant 1,318]

If I understand correctly you want only the walls printed (no skin) on Layer 1 but starting with Layer2 you want everything to print - but the model wasn't designed with that "pocket" on the bottom?  How would you support that first layer of skin of Layer 2?  It's going to sag to the build surface as your model appears to be 60mm wide.  I don't think you can bridge that but you can enable the bridging settings and make a test.

 

I'll continue as if that was correct.

Add a support blocker.  Make it larger than your model in the X,Y and then Z = "Initial Layer Height" thick.  Set it right on the build plate (Z=0).

In Per Model settings select "modify overlaps" and Cutting Mesh.  Select the settings as shown below.  My model was sliced with those settings so the first layer is 3 walls only and the next layer has everything.