Marble Machine Filament Spool Holder

I started out printing the original spool holder. It was pretty cool, but my poorly calibrated machine made it too small for 6mm bearings to fit. So the other day I was playing with sketchup push/pull and offset tools. I'm self learning it and went a little overboard playing around with it. Originally I would have liked this to print with less filament than the previous version, but it uses more than the slim version of the original. I haven't yet printed the screws,