How to make a pattern on these faces?

Grasshopper
1

Hi I’m a self educated student.
I want to make engraved pattern of these faces, use boolean or somthing.
but I don’t know how.:sob:

%EC%BA%A1%EC%B2%98
%EC%BA%A1%EC%B2%981257×795 273 KB

Help me please…
Desktop.zip (1.4 MB)

2

I’d make the pattern you want as one or more Brep objects and then used the Solid Difference (SDiff) function to subtract that from your base geometry.