About this 3D model
This Makerworld upload is a collection of a variety of spool parts, primarily to be used with Bambu Lab printers, although as I have tried to make them as universal as possible, they should also work with most other printers if needed. I had the original design on Printables, but I have now taken that down, and updated it with this. Originally, the purpose of this was to design an empty spool system that can be filled with weights and/or desiccant beads to be used in the Bambu AMS. Now that the A1 Mini and the AMS Lite has been launched, the previous spool design does not fit on the AMS lite, so I've done a complete re-do, with many improvements over the prior design. Like the rest of you, I do not want to be re-spooling filament, and in a perfect world, all spools from various manufacturers would work properly on both the AMS and the AMS Lite, but that is not the case. Anyone who has used the original AMS knows how picky it can be with spools. Some manufacturer's spools don't roll very well in the AMS with not having enough surface area on the roller spool lips for the AMS rollers to grip onto. Another common problem is when your filament is nearing the end, the weight of the spool is too low, causing the spool to hop around or not retract/feed inside of the AMS. Some spools are too wide, some are too short or too tall. There are multiple fixes available besides this to alleviate some of these problems such as spool ring adapters, using electrical tape on the spool lips, weighted inserts for the spools, the Hydra mod, but I wanted a more complete solution that lets me use any filament I want, re-spooling as minimally as possible, without voiding my AMS warranty. This is what I came up with to alleviate all of my issues to have piece of mind when printing out of the AMS. The AMS Lite is a much better design in regards to spool compatibility, as it grips from the inside of the spool, instead of relying on rollers, but all spools still do not fit on it, and if you have both an AMS and AMS Lite, and are swapping spools between them, it's preferable to have something that "just works". What I have been doing is whenever I buy a new roll of filament, if it fits on the AMS Lite without issue, and if it rolls in the AMS, and I can get an inner spool weight inserted into it, I leave it as-is. If it's a cardboard spool, the plastic spool lips are rounded, or the spool's inner hole, or outer diameter will cause a problem with either the AMS or AMS Lite, then I re-spool onto an empty Bambu spool, if I have any lying around, or I print one of these to use. When using my spool weight with a Bambu spool, it fits in the AMS nicely and spins freely. There is an inner wall between AMS slots that keeps the spool weight from falling out, check my uploaded pictures, I've included some showing that. There is nothing wrong with Bambu's spools, other than I don't have dozens of them on-hand whenever I need one, and as they are $11.99 with a lead time to get them to me, printable spools come in handy in a pinch. One advantage my printable spools have over Bambu's is the empty space between the inner ring and where the filament winds onto can be utilized with either desiccant beads and/or weights. Everyone has their own system for keeping filament stored and dry, such as custom humidity controlled cabinets, airtight plastic containers, vacuum sealed bags, etc. I keep all of my spools on filament racks that run around all four walls of my printer room, above all my equipment, which lets me store roughly 200 rolls. I use large ziplock bags when storing spools, and if it's a Bambu or other AMS/Lite compatible spool I'll throw in a container with some desiccant in the bag before sealing. If it's one of my spools, I use the vented design, which has space within it for desiccant beads. I've made a lot of options to try and meet a variety of people's wants/needs in regards to weights and/or desiccant. The solid, non-vented spool can be used empty, just like an empty Bambu spool if desired, or it can be filled with weights to help in the AMS. There is also a vented version with slits on either end to allow airflow to desiccant beads. For inner spools, there are even more options, such as completely solid or vented designs, and some that have chambers, where you can use weights in two chambers and desiccant in two others. This is my preferred design myself. Two chambers filled with weights is plenty of weight even when a spool in the AMS gets very low to keep it from jumping around or giving you the failed to retract error message. The two other chambers filled with desiccant also helps to keep the humidity down in the AMS. I keep these AMS inner spools in the AMS at all times, and then insert them into a roll when needed. This keeps the beads from having to be recharged very often. When they do need to be recharged, I put the entire inner spool in a filament dryer, and when they look good again, put it back in the AMS. To assemble the vari