Unscrew the cap from your supplied injection-moulded spool holder and replace it with this.
Hang 2 spools perilously above your print surface!
Print it in whatever you like, probably best to use lots of shells and strong infill as it has to hold about 1Kg of printer chow above your 14hour prints that you pray wont go wrong.
Best use supports as well to get the nubbins inside. Print nubbin side to the build plate, or don't. I'm not your supervisor.
Included Fusion360 model incase you want to go nuts with it.
The author marked this model as their own original creation.