I already have the main product model in STL format as well as the 2nd product as a separate 3D file. What I need is shrinkwrap (as the surface is not flat) and a clean Boolean subtraction so the logo is engraved on a single surface of the model, but first a few elements of the 2nd stl must be resized—only certain parts, not the whole piece. You’re free to handle that tweak directly inside Blender before performing the cut. The task is deliberately small: once the specific elements are scaled, run the Boolean, check for non-manifold edges or stray verts, and return the model watertight and ready for printing. Naming conventions and orientation must remain unchanged from the source files. If this first test goes smoothly I have four identical jobs waiting, so a fast, precise turnaround is key. Please supply the updated .blend file plus the final STL when you’re done; that’s all I need to move forward.