Spool/Dessocant Holder for Hatchbox spools

thingiverse

Spool support with built-in perforated dessicant holder sized for Hatchbox spools. I mount my spools on the shelf above my printer and thread the filament through a hole drilled in the container lid down into my printer box using a 3-inch length of 2mm ID PTFE tubing from Banggood held in place by a combination of hot melt glue and some random 4mm ID tubing and heat shrink tubing [it works, okay?!]. The whole contraption allows me to print PETG in my garage without any obvious humidity-related issues [Eastern Virginia gets pretty damp]. Compact size fits into Rubbermaid 21-cup box: https://www.amazon.com/Rubbermaid-21-Cup-Dry-Food-Container/dp/B003EYUZJU/ref=sr_1_1?s=home-garden&ie=UTF8&qid=1499185439&sr=1-1&keywords=rubbermaid+21+cup. Bearings are rather wimpy 624VV https://www.banggood.com/10pcs-624VV-4mm-V-Groove-Sealed-Ball-Bearings-Wire-Guide-Pulley-Wheels-Roller-p-1034375.html?rmmds=search mounted on #8 bolts, but you can use whatever grooved bearings fit in the bearing supports. The axle holes are slightly undersized for #8 bolts - you can either ream them out slightly or use M4 bolts. I was able to tap a thread in them with the #8 bolts, but even PETG will split if you apply too much force. The gap between bearing supports is 10mm, but my bearings are 6mm wide, so I added washers on either side. As shown in the picture, there's obviously a fair bit of underextrusion present in my print, but the walls are more than sturdy enough to compensate.