I thought of a new design for filament clips, as the ones I have been using don't seem to stop the filament from getting tangled very well, and also are hard to find sometimes. This one won't let the filament wrap around, and it's hard to miss. Also: branded, because ;-)Let me know if you're interested in a 3mm version.
A completely enclosed spool holder, with a desiccant sachet pocket.Designed to fit Fillamentum spools.Follow me on twitter for updates.@SpannerHands3D https://twitter.com/SpannerHands3D Work in progress as more mounting options to be included.All v2_0 parts have been printed and tested for fit.Parts List:2 x id 8mm od 22mm (608) bearings12 x M3 10mm + Nuts (nuts optional)1 x M8 80mm threaded rod + Nuts (nuts optional)1 x Threaded Bowden Coupling (optional but recommended)1 x Length PTFE Bowden Tubing (optional but recommended)Material Considerations:FLEX_SEAL_v2_0.stl (use Flexible filament with hardness 92 ShA)Print with low infill. 10%SEMI_FLEX_CLASP_v2_0.stl (use semi-flexible filament with hardness 98 ShA)Print with high infill. 80%Compatible spools:(OD 200mm ID 53mm)If you are unable to print the flexible components they will be available soon from:-http://www.spannerhands.co.uk/  https://twitter.com/SpannerHands3D http://www.spannerhands.co.uk/
Each clip is designed to fit each unique brand of spool. It was designed for a .3 mm nozzle. It makes two perimeters with no fill. It may work with a 0.4 mm nozzle but I have not tried it yet. These are for 1.75 mm filament.Hatchbox clip: shown on red filament spoolMaker Geeks clip: shown on green filament spoolUltimaker clip: shown on black filament spool