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Below is a list of parts needed to upgrade an MMU2S to MMU3 (for MK3S+ or MK3.5/S), and to convert an MMU3 for MK3S+ to an MMU3 for MK4/S or MK3.9/S.
The only difference is the main cable. All other parts are the same between MMU2S to MMU3 upgrades, installed on either the MK3S+ or MK3.5S.
Printed parts are listed on the dedicated Printables page for MMU3 printed parts.
Use the list MMU2S to MMU3, excluding the Extruder parts.
The main cable to use is the MMU3-to-xBuddy main cable.
Then, use the list MMU3 for MK3S+ to MMU3 for MK4/S, MK3.9/S for the remaining parts to equip on MK4/S or MK3.9/S.
If you have the MMU3, there are three different conversion kits to turn the MMU3 for MK4S into the MMU3 for CORE One.
This kit comes with a top cover, so the printer will remain fully enclosed.
This kit does not come with a top cover, so the printer will remain open at the top.
Longer cable for the community version of the MMU3 for the CORE One. This version mounts the entire MMU3 unit directly on top of the printer, with an integrated buffer and spool holders. Note that you will have to source the fasteners and other non-printed parts on your own, as they are not available on the e-shop.
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