I have had my U1 for about two weeks with mostly successful prints. I swapped my build plate to a BQ Cryogrip and loaded dried SUNLU PETG. I went to run the max flow calibration to dial it in and after the initial nozzle clean, a second erroneous clean was performed at the edge of the build plate an…

@Zoe_M I have updated to firmware 1.5.2 and tried a first layer test print with toolhead 4 where no previous damage was on the Frostbite build plate. Firmware update was unsuccessful. Process: Unload filament Update firmware 1.5.1 → 1.5.2 Perform multi-toolhead-offset-calibration Wash build plat…

[image] Cainmos: BQ Cryogrip Hi, how about the current firmware version on U1? Have you tried the wiki guide here: https://wiki.snapmaker.com/en/snapmaker_u1/troubleshooting/nozzle_scraping_the_build_plate If the same issue continued, please export the system log on the U1 and submit a sup…

Is that a Frostbite plate? I’ve been using a Glacier for a few weeks without issue, please post back here when you get the issue solved

Hi Zoe_M. I am using Snapmaker Orca v2.3.5 and firmware 1.5.1. I find that the issue is not so much a bed leveling issue but where the toolhead is performing a cleaning operation. I went into the gcode to see what was actually going on and this is part of the pre-build operation: ;===== 粗回零 ======…

Yes, this is the Frostbite. I also have the Glacier to try. I did find that the stock PEI coated plate is quite good though. I’ll have to pull bedmesh data to see if the plate is slightly proud in the rear by the toolheads.

Hi, Have you tried to update the v1.5.2 here: [image] U1 Firmware V1.5.2 Beta Testing is Now Available U1 Toolchanger Hi Everyone, We know V1.5.0 and V1.5.1 caused more headaches than they should have, and we sincerely apologize for that. To make sure we get …

Huge kudos to you for digging into the macro and fixing the offset yourself!:+1: By the way, If you ever switch back to the original PEI plate, remember to revert the offsets to their default values. Otherwise, the cleaning position may land outside the plate and fail to clean the nozzle properly. …

I’m curious now about the hole placement on various plates - if you hold the frostbite and SM plates together do the holes line up? I can’t test my glacier as its being printed on, but I just checked the new Eibos plate I received yesterday against the SM the back of the slots lines up, but the slo…

So I was a bit of an idiot with this, but it was a good learning lesson. This is occurring where it is supposed to at the edge of that lip to ensure no hard pieces of filament are stuck to the nozzle prior to probing. I was more immediately concerned with the amount of surface damage I saw with it h…

I was going to say about some BambuLabs printers actual wear right through the coating at the back of the plate as part of the nozzle cleaning routine, I just wondered about yours being so close to the slot and if the toolhead might get caught on it?

Right. That was also a bit of a concern with all of that. Can easily tweak that in the macro code to just nudge towards the middle of the cleaning area. Would be interesting to see what that tolerance is on peoples’ machines and where it lands. I thought it might also be part of the cleaning strateg…

U1 - Nozzle cleaning path on bed plate

U1 Toolchanger

Zoe_M July 22, 2026, 2:10am 6

Hi, Have you tried to update the v1.5.2 here:

I checked with the engineer earlier. He didn’t explain directly whether the macros could be changed but he implied the new V1.5.2 version might help.

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U1 - Nozzle cleaning path on bed plate

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