Creating trim on simple objects in Blender is easy yet on more complex shapes it can appear quite tricky. But if you know the right tools and ordering you an get great (and easily edited) results without difficulty.
Check out the Patreon: https://www.patreon.com/ArtisansofVaul
Free Add Ons
Machin3 Tools: https://machin3.gumroad.com/l/MACHIN3tools
Quick Snap: https://github.com/JulienHeijmans/quicksnap
CharMorph: https://github.com/Upliner/CharMorph
(Affiliate links) SUPPORT THE CHANNEL BY BUYING SOME STUFF YOU WERE GOING TO GET ANYWAY ;p
Hard Ops and Boxcutter discount bundle: https://blendermarket.com/products/hard-ops--boxcutter-ultimate-bundle/?ref=834
Hard Ops: https://blendermarket.com/products/hardopsofficial/?ref=834
Boxcutter: https://blendermarket.com/products/boxcutter/?ref=834
Just Panels Add On: https://blendermarket.com/products/just-panels/?ref=834
Construction Lines: https://blendermarket.com/products/construction-lines/?ref=834
Cablerator: https://blendermarket.com/products/cbl/?ref=834
Mesh Copier:https://blendermarket.com/products/mesh-copier/?ref=834
Grid Modeler: https://blendermarket.com/products/grid-modeler/?ref=834
Mesh Machin3: https://blendermarket.com/products/meshmachine/?ref=834
Curve Machin3: https://blendermarket.com/products/curvemachine/?ref=834
Decal Machin3: https://blendermarket.com/products/decalmachine/?ref=843
Punch It: https://blendermarket.com/products/punchit/?=ref843