One Piece Spools For 3mm & 1.75mm Filament Samples

An easy and quick 1 piece spool for 1.75mm & 3mm non-flexible filament samples.

The spool has a 10cm diameter so the filament doesn't have to be bent or flexed excessively.
Got it down to around 17gms of pla with lots of holes :-)

Anyone wants one with holes for 3mm filament let me know, might do one anyway.

17/03/2015
Made holes bigger, down to under 17 gms :-)
Added 3mm version.