Prusa3D Forum - Recent Topics

What's going on with Prusa's Nextruder HT hotend?

hyiger — Fri, 01 May 2026 16:17:28 +0000

There are already a few general threads on sub-forums this but thought I'll create a new discussion here.

So Prusa announces the new 400° HT hotend in October, puts it up in the store but doesn't make it available for purchase. Obviously this would need to include a firmware upgrade and most likely a fan-shroud redesign but was this to just check off a box saying: "Hey, the Core One can do 400° now so get your PPS-CF on"? Wondering if the tested this in-house and melted the nextruder or something.

I'm also assuming that this won't work with standard brass nozzles and will need to use exclusively the 500° Obxidian nozzles.

Bed thermistor error after switching to 6.5.3

Lordran_Hollow — Fri, 01 May 2026 12:26:34 +0000

Hey all, just wanted to see if anyone else is encountering this issue I'm having. If I set the bed temperature manually to heat up to a specific temp (in this case I'm setting to 100C), the printer will throw a thermal runaway error citing the bed thermistor.

Now here's the thing, if I print and the bed heats up to this temp, it's perfectly fine. Even after hours of printing. The manual heat up method throws the error within a minute.

I print with ABS and I like setting the bed temp so that the chamber has time to soak up the heat since my enclosure is passively heated. It's not the end of the world that this issue is happening, but I was curious if anyone else has started experiencing this issue after upgrading the firmware.

The full setup is a Mk4, with 6.5.3 firmware, and an MMU3.

HorribleAppleUpdate

Spiffy Wolf — Fri, 01 May 2026 12:19:31 +0000

Your site will not let me create a help desk ticket I have the language prompt that will not leave the page and I cannot move from there BTW Give some instructions on how to update apple as your 'path' sucks...../Give me a link I can click and not the git hub bs.apple page still shows 2.4 Why not give updates thru Apple????

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Sretching sound after replacing Revo 6 with another Revo 6. What causes that?

heinzight — Fri, 01 May 2026 04:27:14 +0000

Had the Revo 6 on my MK3S for several months, with beautiful results. Swapped the .4 nozzle for a .25 and began to print. DON'T DO THAT! At least in my case I should have gone through calibrations first as I now have a 'groovy' design on my build plate and it bent the Revo. Ordered and installed new one and powered up. MMU2 spindle revolved but when the head began to move a loud squeely scretch bellowed out. What was that and what could have caused it?