A spool holder which can hold some more spools than usual ones. The width is only limited by the length of the aluminium pipes you can get or the size of your room. My current one is 90cm in width and can hold 2 x 4 spools.

Every spool between 12 and 35+ cm should work fine as long the side walls of the spool are not more than 5.5-6mm in width.

The single parts can slide easily on the aluminium pipes to fit you spools width.

Non-printed parts:

• Aluminium pipe 10 x 1 mm x "as long as you want"... (If you live in the middle of Europe you very likely will find "Alfer" aluminium pipes in your hardware store. That are the ones you need)
• Ball bearings (10 x 15 x 4) - Four for each spool

Printing parts:

• 2 x Ends
• 2 x Single for each spool

If the spool holder is more than 40cm in width or/and has to carry very heavy spools i recommend to also print one (or more) supports.