57mm, 56mm, 54mm and 33mm Reel Adaptors for a 26mm holder

thingiverse

You may prefer generation 2 of this design if you value having a Fusion 360 file from which to create your own. If so, see Thing#4165740. I have a variety of filament reels, including a small reel with center hole of 33mm diameter. I needed a single holder that would work with all reel sizes. For that purpose, I found Thing#3002160, which was able to support all of my current and anticipated reels. My reels are likely a different width than those of CrazyPonkeyMen, and they kept falling off the 26mm parts of the holder, so I remixed thing:3002160 to a constant 26mm diameter shaft (see my thing:3789632). Then I remixed Thing#3041610 to create a series of adapters which fit onto thing#3789632 and press-fit into the centers of the filament reels that I buy. NOTES: 1. The design of thing 3041610 relies on achieving a friction fit between the lips on each of the 4 tabs and the center of the reel. I prefer a snug fit, myself, so I often need to use a pencil or similar "stick" to push the last tab in just a bit when inserting these adapters. 2. I originally uploaded .stl files containing pairs of adapters. Then I decided it might be helpful to emboss them with a label indicating their diameter. Unfortunately, the most popular size (54mm) is also a fractionally tighter fit than the others, to the point where the embossed label fouls the edge of the hole when being inserted into a reel. I decided I would remix my own remix & move the size label from the outside edge to the inside edge on the 54mm adapter. I also decided to upload just a single adapter in the .stl file, to minimize the download time and storage requirements. That approach also reduces the workflow required to print a single adapter, since my slicer treats each pair as a single object.