Deltaprintr PVC spool holder

I have PVC pipe hubs on my spools for my solidoodle 3. This means they won't fit on the Deltaprintr laser cut spool holder. Also, the filament can fall off the side of the spool which causes problems. This allows you to use tension nut filament guides to keep that from happening.

UPDATE: V2 files make the cross shallower than the plywood so that an M3 bolt can be drive into the bottom through a plate or large washer to secure it. V1 simply drops in and can be somewhat wobbly.