ZBrushCentral

Boolean and Close Holes deforming Subtools

Hello friends,
i finished my spider man and wanted to prepare him for 3d print. Therefore i dynameshed him but wasnt pleased with the lost of details. so i tryed to boolean all Subtools togehter with remash by union…
both times getting weird results. also close holes induced weird results :frowning:
do u know why?? i would like to understand to get better and find solutions.

Subtool from the Eye:

Boolean:

Close Holes

Hello @diam01 ,

Are the pieces welded together and do they form a closed, watertight volume?

Both Dynamesh and Remesh by Union require a mesh in this form for the best results. It looks like maybe your volume isn’t welded or watertight, and that the pieces are being closed individually. It looks like maybe it is attempting to close the volume on that thin piece of geometry with the hexagonal surface individually, and that is where that overlapping surface is coming from.

:slightly_smiling_face:

Hi @diam01

My guess is that the eye subtool with the hexagonal detail is single sided. Remesh by Union will try to make it a solid first by closing holes. You can see the same effect if you grab a cylinder and merge with a Terrain3D subtool. The Terrain3D subtool is a wavy single sided form. Remesh by Union fills it in by a close holes opertion and then does the boolean union operation.

If this is the case then give it a small amount of thickness (Zmodeler:Qmesh for example) and then Remesh by Union. Also make sure that the edge fully penetrates the eye frame subtool. One way to check that is to run Zplugin:Intersection Masker on the merged subtools. A mask will be created on each object where they intersect. For your form you should see a mask that forms a complete loop around the inside of the eye frame. If you are printing the eyes as separate pieces then you need the thickness anyway. If the eyes are being merged with the rest of the body then the interior mesh will be removed by subsequent Remesh by Union operations so there’s no problem to add thickness to the eye detail.