This 3mf doesn't really open correctly in Bambu - sorry, I use Orca and Bambu Studio is stupid that it won't open other types of 3mf. You can still import that geometry but you will have to set up the colors.

I needed a sign for my church's AED and didn't want them to have to buy one. Here's a design to give you both a double sided, flat, perpendicular sign and those neat triangle, 3D sign.

The 3D sign has three parts, a 90 to attach the two sides together, and then two 45 degrees to attach the sign to the wall. I used doubl stick tape and plan on using Gorilla Tape to put it on the wall. Both sides are 2mm thick and are the same.

The perpendicular sign is comprised of three parts (plus the arrow if you need it), you will need to print both plates as they are different. These are 1mm each. I glued them into the bracket and then will add gorilla double-stick tape for putting it on the wall.

I scaled the final product to 75 percent and it sits about 7 inches tall by 5 inches wide.