The grinder can hold more beans with this extension. I've upload the skp file here so that you can push/pull the height to better fit your situation. But considering these's a limitation on how tall a printer can print and I'm not sure how crazy you want this machine to look like, I also made a stackable extension that can be place on top of the base holder. You can also push/pull it too. You can stack multiple blocks all the way to the roof. The tab on the holder.stl is to push in the safety lock on the grinder, other wise the grinder won't start. edit 1: Rev 1 is uploaded with a better looking tab. edit 2 There was an error in the stackable file leading to failed slices in some software, it's now fixed.print with tab pointing up. 10% infill is good enough.