Expresso tin Knock box

This Knock box is designed to sit on top of a coffee tin. I use it at work and we go through quite a bit of coffee. This top neaten up the ugly tin we were using previously and is much more functional than the tin alone.The part is designed to sit on a 130mm diameter coffee tin. I've added in the SCAD file so you can now generate custom diameter models.The code allows you to switch off either the top or shaft and only generate one of the piecesTo generate the screw threads I've added “threads-library-by-cuiso-v1.scad” by ANDRES ROMAN (AKA Cuiso). You can visit https://creativecommons.org/licenses/by/3.0/ for more detailsNote: this code has been tested but if you push the variables you can probably break it, use with caution.