The Triangle master spool is a remix to the Polymaker reuseable master spool. The Triangle master spool decreases the amount of material by up to 15-20% by using a sick triangle cutout design. It comes in 3 different sizes, Regular (original Polymaker size), Slim (1mm slimmer), and Extra Slim (2mm Slimmer). The different sizes only affect side B, so you don't need to re-print side A every time you need a slimmer spool.

Original Polymaker Master Spool: https://www.printables.com/model/1477612-polymaker-reusable-master-spool-for-refill/remixes

Print Settings-

PETG

0.2mm Layer Hight

2 Walls/Perimeters

10% Grid Infill 

Feel free to leave any questions or suggestions in the comments.

Thank you.