Fix 3MF Sign Design

I already modelled a simple sign and saved it as a 3MF file straight out of Bambu Lab’s own software, but the base isn’t solid enough and the raised text doesn’t come through cleanly. All I actually need... (Budget: $10 - $30 AUD, Jobs: 3D File Scaling, Slicing & Print Preparation, 3D Modelling, 3D Print Design, 3D Rendering)