Meshmixer will work with nearly any kind of mesh, but STLs are the standard filetype to work with. Please export your mesh from whatever modeling software you use in millimeters to ensure it is scaled properly. If Meshmixer isn’t yet installed on your computer, you can find it in the S:\SchoolApps\Meshmixer. Copy the installer to your workstation, then right-click on it and select Run as administrator.
When the setup completes, you can start Meshmixer. The first time you run it, the software will crash and attempt to send a bug report, but the window to do this with will pop-behind other windows on the screen. Move it to the side to close it out.