Filament Sample Reel

thingiverse

I've added a set of V2 parts to my collection. The new V2 parts are backward-compatible with all V1 parts, but they have some key improvements that make them better. * The Screw end now has 1 mm shorter threads to ensure that the parts screw together tightly without any gaps on the inside. * The Screw end also features keeper holes for both 1.75 mm and 3 mm filament, making it easier to handle different types of filament. * Bases are available in four sizes: 60 mm (V1 size), 40 mm, 30 mm, and 20 mm widths. The 40 mm base was a bit too wide for my needs, and the 20 mm base was too narrow to load filament easily. So, I added a 30 mm version that should be just right. I've left the V1 parts up in case someone wants them, but there's no reason to print them anymore. **Yet Another Filament Sample Spool** I couldn't find a spool that fit my needs, so I designed one myself. It has an inside diameter of 70 mm, making it easy to store small coils of filament. The outside diameter is 180 mm and the width is 60 mm, so it fits normal filament spool holders and edge-riding holders will work as well. The spool is printed in two parts: the "Base" has one flange and the entire exterior hub, while the "Screw" is the other flange that threads into the base. The design allows the base to hold the filament entirely, without needing any clearances for the screw. Print this spool with no rafts, no supports, or no brims. Just orient the STLs flange-down and print away. There should be zero overhangs. The threads are a generous 2 mm pitch with a 6g4g fit, making them easy to print and mate on any printer. I used 10% infill because of the small inner area, but you could probably get away with 0%. Most edges are filleted, which makes for a more friendly print and a smoother roll on edge-rolling spool holders. Here are some key specifications: * Outer Rim Diameter: 180 mm (≈7⅛″) * Outer Hub Diameter: 70 mm (≈2¾″) * Inner Hub Diameter: 60 mm (≈2¼″) * Inner Hub Width: 60 mm (≈2¼″) The spool holder shown in the first photo is MartinMajewski's awesome "Prusa i3 MK2(s) & MK3 Spool Holder - Frame Mount - Top Loader".