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 is for someone comfortable in Bambu Studio (or any editor that keeps 3MF features intact) to:

• give the base a consistent, sturdier thickness
• ensure the lettering remains cleanly raised above that new base

Once adjusted, please send back the corrected 3MF ready for slicing and printing on my Bambu P2S. A quick screen grab of the revised cross-section or a short note on what you changed will help me verify the tweaks before I hit print.