Better Printrbot Simple Metal Spool Holder

Better Printrbot Simple Metal Spool Holder

I fixed mayermi design for his Printrbot Simple Metal Spool Holder.

Things I did:

• Resized the holes. They were about 13.1mm and should fit a 12mm rod. I made them 12.5mm.
• Changed the space between the two holes from 71mm to 70mm.
• Alterted the fase to 50° so it can be print easier without support.
• Designed a "washer" for the bearings. Now the spool can't slip off the bearings.

bill of materials:

• 2 x M8 screws to secure the holder
• 4 x M8 Screws (8x45mm)
• 8 x washers
• 8 x 608ZZ bearings
• 8 x M8 nuts

I stacked them this way: nut - washer - bearing - bearing - washer - nut.