You can use any 3D modeling software that can save as a STL, 3MF, or OBJ. Here are some free options. Sample print to show the various types of build plate adhesion (skirt, brim, raft) when printing.

All prints may be picked up in the 3D printing lab in Knoy 155. When you pick up your part, there will be a “raft” on the bottom that should be removed. It should be able to be removed with your hands ...