CORE/MMU - General discussion, announcements and releases

RE: CORE/MMU

Protoncek — Fri, 16 Jan 2026 07:30:10 +0000

Well, as MMU3 goes after months of use i can say that it's definitely not "fullproof". Jams can occur, although rarely - filament doesn't go into ptfe tube but sideways, especially at the end of the roll when it's more bent. Then if filament runs out a jam is mandatory. Why? All filament are intensively bent (90 degree or more) at the end, in order to be "stuck" to the reel when producer starts to wind it. And that part is always causing a jam: when system backs up filament it doesn't go through pinda back to the buffer but either it gets stuck or it goes sideways.

In any way, making "ultimulti" version of MMU3 is (almost) a must, since there's no need for unscrewing the idler each time, so solving the jam is way faster and easier.

But, at the end, it's quite ok. I'd buy it again immediately. In fact, i can't imagine being without it anymore. Again, lucky part of having a prusa is that pretty much anything can be corrected, changed, improved... since there are tons of modifications out there.

RE: CORE/MMU

GBMaryland — Fri, 16 Jan 2026 06:44:37 +0000

The H2D just works. I’ve got ad many hours on the H2D as I do the core one. I’ve had many more issues with the core one overall. I’m looking forward to the INDX solution, as the MMU3 is super limiting and nowhere near as ready for prime time as the AMS solutions offered by Bambu. Effectively, the Bambu is a well thought out and delivered solution, whereas the core one was not ready for prime time when I got it ~a year ago.

RE: CORE/MMU

Mac-N4MCC — Wed, 14 Jan 2026 22:02:56 +0000

I didn't install the camera that was included in mine for a few months. I can't live without now. My C1 is in one room and I am up late watching TV. I have had too many mess-ups I did not catch because I was in another room!

RE: CORE/MMU

Mac-N4MCC — Wed, 14 Jan 2026 22:02:54 +0000

RE: CORE/MMU

Mac-N4MCC — Wed, 14 Jan 2026 22:02:53 +0000

RE: CORE/MMU

iftibashir — Mon, 15 Dec 2025 15:34:08 +0000

I find the camera incredibly useful, considering my printer is in an outbuilding. I start up (via smart plug) and send the print job remotely, and then use the camera to periodically check to ensure all is well. The stream is smooth and of a high quality. Once done I can use the app to check everything has cooled and then switch the printer off to save power. This way I don't have to keep venturing out through the cold garden to check on the print - call it laziness if you like! lol

On the other hand, my Core One stays inside the house and is used for smaller prints that don't need to carry on overnight. I'm not paying more for a camera (delivery costs are huge) so it has to stay where I can easily see it instead! I do like the Prusa multicolour systems though - MMU always worked perfect for me on the MK4s, albeit a great space taker - and I think the INDX system will be awesome too. Just would be ideal if theye didnt skimp on the cheap parts - or find some cheaper courier services!

RE: CORE/MMU

Protoncek — Mon, 15 Dec 2025 15:22:35 +0000

Bambu also has camera by default. So according to your wishes is also a no-go printer…?
Camera is extremly usefull when you stop “just playing” with your printer and start to print “serious” things, then occasional monitoring if all is ok is a must. You can easily look via camera without the need to physically go to the printer.

RE: CORE/MMU

Diem — Mon, 15 Dec 2025 15:12:32 +0000

Prusa do not spend more to make it look pretty either!

You could always paint it - or at this time of year add tinsel and a few baubles.

You wanna save pennies at 1500€ worth printer?

Not really, but I don't like waste and I have no use for a camera - I did fit one to my Mk3 via Octoprint a few years ago but removed it after a week as it wasn't doing anything useful, a solution to a problem that didn't exist.

Cheerio,

RE:

Protoncek — Mon, 15 Dec 2025 14:03:31 +0000

I disagree; it means that the majority, who have no use for a camera, can save a few pennies.

You wanna save pennies at 1500€ worth printer? Man, you're not looking to the right printer... Aliexpress and appr. 250€ priced cheap china clones are the ones for you in that case.

RE: CORE/MMU

iftibashir — Mon, 15 Dec 2025 13:56:02 +0000

Posted by: @diem
it's really a shame that camera is optional on core one,
I disagree; it means that the majority, who have no use for a camera, can save a few pennies.
Cheerio

I think it should have been included with the main printer in the first instance, considering we are literally talking pennies anyways - and especially considering Prusa do not spend more to make it look pretty either!