Bambu Reusable Hex Spool

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The rims and center ring are straight from Bambu's spool. And interchangeable with it. It is designed for Bambu's refill spools. But I have found that Elegoo spools also fit perfectly on it. Also Overture and Polymaker spools fit but are a bit loose, but they fit perfectly over the center rings of Bambu and Elegoo spools. So, I use them as spacers. Let me know if you try it with any other brands! I recommend PLA because it is a lot stiffer than PETG.   11/19/2025 - V2.6 - I added low profile filament clips around the rims! Personally, I prefer these much more than the holes. but tell me what you think. I did leave the holes for those folks that still want them.    06/26/2025 - V2.5 - I decided to revisit this model and see what i could do to improve it. But then a few hours later i had completely remade it from the ground up! I am leaving v2.2 in the other files for those might still want it. v3.2 is unchanged. v2.5 Improvements: • Thicker hex lattice • better angled filament holes • better alignment of filament holes so they are ¼ turn off from the holes on the other half. • removed inner ring notch • added hole to inner ring • fixed a .2mm misalignment of the center ring to the outer ring • made the scale easier to read - note the scale is only for reference/estimate and not to be considered an exact gauge. 03/24/23 - I've got multiple requests, so I uploaded a version 2.3 and 3.3 that remove the little notch on the inner ring. I left print profiles with versions 2.2 and 3.2 that still have the notch for Bambu spools. Note, I think the notch is important because it locks the cardboard inner ring so it doesn't spin free of the spool.    12/14/23 - WOW 7K Downloads!!! Some folks asked for a filament scale, Soooo here is v2.2 and v3.2!!! The left side of both have a filament scale. The right side is unchanged.   11/19/23 - Here is v2.1 and v3.1!!! The only difference is I added a 2mm hole in the Left side of the center ring for filament to be insert