30 x 80 Spool Holder for Replicator 1 or 2

I was looking for a simple single part replacement for the proprietary and difficult to use MakerBot spool holders, and came across whpthomas's excellent design - except it was slightly too long for the space I have behind my MakerBot, and I don't need it for 5lb spools, just for 1Kg/1.5Kg spools from MakerBot and non MakerBot suppliers.

Not having Shark FX (~$1.7K!) I loaded the .stl into Blender ($0) and shortened the spool length to 8cm while keeping the rest of this excellent design as is