Hey again xD !
Today I have an other question
I continue with my ideas to make a powerfull imbrication system to draw complex components but today I was trying to merge 2 elements into one mesh and this happened. The red haired one is the thing we should get (without the red color on the top). I have been trying to use the mesh.mergeMeshes method but for the rest of the projet I need to keep csg (you can look at my other tickets to see why).
Thanks by advance