Letter Opener

I misplaced my letter opener and had some mail to open, so I threw together this design! It doesn't work as well as a letter opener that has a metal blade, but it gets the job done. 

I made the model in Onshape. If you have an account, you should be able to copy the file and modify it if desired: https://cad.onshape.com/documents/1fa1afad7f70f0ab9147a072/w/ffb6dfcf805e761df122a978/e/ad0f1d0470cde0a37106f1cd?renderMode=0&uiState=671d1761c64b2353f4338c8f