This is a spool holder for the 42L "LocknLock" box.
200mm spools fit exactly.
It contains a groove for Extrutim's silicate box.

2 holders are required for the box and up to two silicate boxes can be used.

For quick Print:

2 Walls

5 % infill

no Support needed. 

Print them vertical one not rounded Side.

Print speed depends on Printer. I Printed with >200mm/s on BambuX1C