Ever since I saw the first leaks of the U1 I had this idea in my head of why not swap filament on the toolhead(s) not being used, while the active toolhead prints? That will basically erase any filament change time wasted in a normal AMS system (this is the downfall of the “innovative” H2C for over …

So where can we buy the filament connectors and accessories for this sidecar that we will be using with 16 colors of filament?

Id love one of these, just to add 4 more colors

[image] pellefjant: just to add 4 more colors Three more colours. You’re taking one lane out to add four lanes, so that’s three overall.

The “fatal flaw” as they phrased the question, is that putting a cutter on top of the toolhead would leave you with over 100mm of filament to purge each color swap, that takes a ton of time and creates a ton of waste. Optimizing tip tuning is always beneficial though.

[image] Sidecar: would leave you with over 100mm of filament to purge each color swap It need not be quite as much, the extruder could be used to back up at least some of that before being cut, but I figure the waste is better than a filament blob jamming in the tubes.

I’ll just leave this here: [image] GitHub - DW-Tas/EMU: The [E]xpandable [M]ulti-material [U]nit. The [E]xpandable [M]ulti-material [U]nit.

OK? There are at least 10 different open source mmu units out there, not sure why you left this here? Here’s a good video showing some of them https://youtu.be/rBXQqZq790M?is=R859xFmuGketBo1G

Sidecar 16 color MMU for U1

U1 Toolchanger

CrazyIvan June 28, 2026, 8:13am 159

Just to draw attention to this: U1 filament cutter or tip shaping for MultiAce swaps , with the possible application to Sidecar.

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Sidecar 16 color MMU for U1

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