Having just bought a Bambu A1 and not wanting to spend hundreds of dollars on an AMS or MMS, I designed a low cost solution. It allows you to keep 4 reels of filament mounted on a reel caddy and, by simply unloading one color/filament and retracting it by about 3”, you can then feed your desired color/filament by loading it and feeding it in by about 3”…all from a centralized device connected to the printer.
I OFFER THIS TO YOU FREELY and, if you'd like to show your appreciation, you can buy me a coffee or a beer via PayPal:
The author marked this model as their own original creation.