This part is designed to replace the stock spool holder with standard pneumatic fittings so the filament can be used while stored in a dry box. It fits 6mm nuts and uses the 30x1.5 nut from the origonal spool holder. V1.1 makes some changes to reduce fillament rubbing on the printer frame and adds fillets to strengthen the part.

 Print vertically. Use supports touching build plate. If supports are used in the nut holes, care must be taken when cleaning them out to ensure the nuts will fit. All forces are transmitted through the top layers, so a thickness of at least 1mm is recomended to prevent sagging. This was printed in PLA and PETG with no issues. 

Layer height: 0.2mm