MMU2S Frame Holder with Bypass Toggle Switch

prusaprinters

A necessary upgrade if you want to keep both the MMU2S and the usefulness and reliability of the of the Prusa MK3/S/+ I was excited to install the MMU2S but was quickly disappointed when I realized there was no easy way to bypass the MMU2S easily. With a bypass switch you can easily switch off the MMU2S and use the printer as if the MMU2S is not installed - I use this mode most of the time as it is easier to load and unload filament. You will need to by a Toggle switch with a 12mm mounting hole. Like this.Wire up the switch inline with red and black power cables of the MMU2SNB: After using the switch to toggle on or off the bypass be sure to press the X button on the Prusa LCD panel to restart the Prusa Electronics.To load you have to push the filament through with more force than you would before the MMU2S upgrade - you are now having to push through the bondtech gear rather than the ball bearing setup of standard MK3S+.