RailCore Internal Spool Holder

This is a revised version of my original spool holder design. This one allows you to mount your filament spools inside the printer enclosure. This new holder fits the new atomic spools and all the other major brands. It allows full Z travel, bed will not hit the spool when mounted on the inside back panel of the printer.
Locate a suitable spot to drill the 1/4" hole for the mounting bolt.
Some additional hardware required to mount it:
- (1) 1/4-20 x 2" bolt
- (1) 1/4-20 nylon lock nut
- (2) 1/4-1" washers

1 washer goes on the outside of the panel then bolt goes through to inside. Place the holder over the bolt. Insert another washer inside the hollow area of the holder on the bolt and fasten the nut down.