When you make the boolean mesh it destroys the subdivisions of your subtool, it basically dynameshes it - Is there a way to preserve the subdivisions when you do this? This would make getting the low poly model easier. The only other way I can see is to make a duplicate of your subtool with all the subdivs and just use that… just wondering if any of you lot have a good work around…
As far as I understand it (exploring new workflows everyday) you can’t keep Subdivs (which makes sense really regarding the resulting geo). The final UMesh has nothing to do with Dynamesh. It maintains the geo of the object being cut as well as the geo of the cutter object. Cool thing is that it automatically creates the according Polygroups! Helps cleaning things up if needed. HTH
Thank you! I’m still getting my head around this/getting used to workflows associated with Boolean and other remeshing style operations.
Why does it make sense to destroy the original subd levels? This seemingly completely demolishes a non-destructive workflow that is claimed by this workflow. Sure, you can preview in real-time and make exact cuts from the live boolean preview, but you can’t take that “live boolean preview” outside of Zbrush! The essential step of creating the boolean mesh completely destroys the carefuls steps I had with subdivision levels (possible allowing me to avoid retopology).
Hi @EradifyerAO ,
Welcome to ZBC! 
When using booleans it is not possible to combine the different meshes without creating triangles at the joins. It is these triangles that destroy the subdivision levels as higher subdivision levels must be all quads. There’s no way around this, so you need to plan your workflow around the restriction.
Marcus