Filament Sample Spool for Small Build-Volume Printers

I've noticed that sample filament tends to come packaged in one of two sizes -- small / tight coils, and considerably larger coils. This presents a problem for me, since my printer (a Kodama Trinus) has a fairly small build volume -- so I can't directly print a spool large enough for the small coils, much less the larger ones.

So I came up with this design, centered on a hub *just small enough* to print on my Trinus, and with filament-holding "forks" of various lengths. Use a bit of "super