LAck table adjustable spool holder roller

i liked the original idea of just dropping the roll of filament on the spool holder just didnt like having to adjust the bearings too be inline with the edges of the roll each time i used different sized rolls.

i decided just to make some rollers too fit the original design you just need an extra set of bearings all round and to print 4 rollers, 4 of the shafts and 4 of the sides.

the sides are 2mm taller to allow the rollers to turn freely.

the shafts are just spacers so the bearings dont rub, the spacers give 1mm each side so the bearing can still spin freely. i have added 3 different lengths in case your gaps are slightly different.

the rollers have a flange at each end to stop the spools rolling into the gaps at either end.