Problem with grasshopper trim surfaces

Hi i have a problem i try to make a 1:1 scale model and the thickness of the material is 4mm
when i try to make the trim in this waffle structure i just fail, some planes cut other show an error. !
the definition is made with a 4cm cut but i need to make a 4 mm cut

PROYECTO MUEBLE.gh (69.6 KB)

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