# U1 Troubleshooting guides **URL:** https://forum.snapmaker.com/c/snapmaker-products/u1-troubleshooting-guides/93.md?page=1 [Latest](https://forum.snapmaker.com/latest.md) · [Categories](https://forum.snapmaker.com/categories.md) · [Tags](https://forum.snapmaker.com/tags.md) **Page:** 2 --- ## [U1 Filament Issue](https://forum.snapmaker.com/t/u1-filament-issue/42202)
**Author:** [@Tuxydoh](https://forum.snapmaker.com/u/Tuxydoh)\ **Replies:** 1\ **Last updated:** [June 9, 2026, 5:22pm UTC](https://forum.snapmaker.com/t/u1-filament-issue/42202 "2026-06-09T17:22:37Z")
I am on current versions of Snorca and Firmware, the issue I am having is that I can choose my custom filament profile in the prepare and slice it, however when I try to upload to printer, it does not allow it as it only… --- ## [Imploading/Shrinking on some prints](https://forum.snapmaker.com/t/imploading-shrinking-on-some-prints/42134)
**Author:** [@irvin\_builds](https://forum.snapmaker.com/u/irvin_builds)\ **Replies:** 2\ **Last updated:** [June 4, 2026, 7:48am UTC](https://forum.snapmaker.com/t/imploading-shrinking-on-some-prints/42134 "2026-06-04T07:48:34Z")
Hi i’m seeking help in trying to determine whats the probable cause for inconsistency in the overhangs? not ok prints kinda ok prints \ these are off the same plate, same temps, \ **Author:** [@fatboy1271](https://forum.snapmaker.com/u/fatboy1271)\ **Replies:** 6\ **Last updated:** [May 25, 2026, 11:01am UTC](https://forum.snapmaker.com/t/tpu-anomalies/41898 "2026-05-25T11:01:03Z") My Ducky in TPU. Any thoughts on the anomalies I’m getting? It’s been a long time since I printed TPU, first on the U1, so I’m not all that familiar with it but the left side is clearly cleaner than the right; although i… --- ## [Uneven layers](https://forum.snapmaker.com/t/uneven-layers/41645)
**Author:** [@hackspider](https://forum.snapmaker.com/u/hackspider)\ **Replies:** 27\ **Last updated:** [May 18, 2026, 2:42am UTC](https://forum.snapmaker.com/t/uneven-layers/41645 "2026-05-18T02:42:14Z")
I have a problem with my wall finishes on the U1: I use eSun PLA Matte as filament from a Snapmaker DryBox. The nozzle temperature is set to 230C after thermal calibration. Also flow rate , max flow rate, pressure ad… --- ## [Filament gaps at color change](https://forum.snapmaker.com/t/filament-gaps-at-color-change/42001)
**Author:** [@SpyderByte](https://forum.snapmaker.com/u/SpyderByte)\ **Replies:** 2\ **Last updated:** [May 17, 2026, 12:11pm UTC](https://forum.snapmaker.com/t/filament-gaps-at-color-change/42001 "2026-05-17T12:11:14Z")
Have used my U1 for less than 30 hours of prints and no problems with it in any way. I have been using the Paxx Extended on current firmware as it’s updated and all recalibrations each time it upgrades. The prints have… --- ## [Save video, timelapses and gcode directly to USB stick](https://forum.snapmaker.com/t/save-video-timelapses-and-gcode-directly-to-usb-stick/41942)
**Author:** [@Frontier](https://forum.snapmaker.com/u/Frontier)\ **Replies:** 3\ **Last updated:** [May 11, 2026, 6:02pm UTC](https://forum.snapmaker.com/t/save-video-timelapses-and-gcode-directly-to-usb-stick/41942 "2026-05-11T18:02:08Z")
Hello, A couple days ago I’ve received my U1 and the initial feeling is that this is a great machine. I have extensive knowledge from Marlin FW systems (tinkering them since 2017) but I have never ever had a Klipper-ba… --- ## [The entire system and Klipper crashed, and it can't be restored...](https://forum.snapmaker.com/t/klipper/41844)
**Author:** [@Gary\_Leung](https://forum.snapmaker.com/u/Gary_Leung)\ **Replies:** 3\ **Last updated:** [May 3, 2026, 9:24pm UTC](https://forum.snapmaker.com/t/klipper/41844 "2026-05-03T21:24:27Z")
I previously flashed a third-party firmware to make my ACE PRO usable, and since I saw a new version yesterday, I updated it. After the update, Fluidd showed that there was an error in the Klipper system. I then tried to reset it to factory settings myself. Finally, the printer got stuck on the boot screen, and Fluidd displayed 'unknown'... How can I completely reflash the Klipper system now? : I have already tried uploading the official firmware in firmware-config, but the upload fails halfway through with an error. --- ## [How to disassemble tool head with really bad clog](https://forum.snapmaker.com/t/how-to-disassemble-tool-head-with-really-bad-clog/41884)
**Author:** [@royw](https://forum.snapmaker.com/u/royw)\ **Replies:** 2\ **Last updated:** [May 3, 2026, 3:16pm UTC](https://forum.snapmaker.com/t/how-to-disassemble-tool-head-with-really-bad-clog/41884 "2026-05-03T15:16:23Z")
Howdy! Well I got distracted on a new print job and found this “blob that ate my toolhead”: Yes, that is white ASA. In retrospect, the cause is I didn’t add more glue to the plate for the second print (first worked… --- ## [TPU Automatic Feeding](https://forum.snapmaker.com/t/tpu/41314)
**Author:** [@VItasG](https://forum.snapmaker.com/u/VItasG)\ **Replies:** 6\ **Last updated:** [April 26, 2026, 10:20am UTC](https://forum.snapmaker.com/t/tpu/41314 "2026-04-26T10:20:25Z")
It's quite strange; my U1 3# feed port can automatically feed 85A and 90A TPU directly, but when feeding from port 4#, the material gets卷进去 (rolled in) and cannot be fed. Has anyone else encountered a similar issue? --- ## [Feeder squeak and disassembly warning](https://forum.snapmaker.com/t/feeder-squeak-and-disassembly-warning/41810)
**Author:** [@SpyderByte](https://forum.snapmaker.com/u/SpyderByte)\ **Replies:** 1\ **Last updated:** [April 22, 2026, 4:16am UTC](https://forum.snapmaker.com/t/feeder-squeak-and-disassembly-warning/41810 "2026-04-22T04:16:19Z")
In less than 20 hours of prints my #1 feeder started squeaking and decided to look inside thinking it might’ve been a piece of filament. Nope, but I spent an extra hour looking for a spring instead of doing a 10 minute … --- ## [U1 starting to print on its own?!](https://forum.snapmaker.com/t/u1-starting-to-print-on-its-own/41536)
**Author:** [@guzforster](https://forum.snapmaker.com/u/guzforster)\ **Replies:** 6\ **Last updated:** [April 8, 2026, 11:04pm UTC](https://forum.snapmaker.com/t/u1-starting-to-print-on-its-own/41536 "2026-04-08T23:04:35Z")
I’ve now had this happen twice: the printer starts reprinting the last job on its own. I suspect it’s triggered when I save or close Snapmaker Orca. The first time, I happened to be nearby and caught it early enough to … --- ## [U1 Bed Seems Warped](https://forum.snapmaker.com/t/u1-bed-seems-warped/41669)
**Author:** [@Chance\_Wen](https://forum.snapmaker.com/u/Chance_Wen)\ **Replies:** 4\ **Last updated:** [April 7, 2026, 7:58pm UTC](https://forum.snapmaker.com/t/u1-bed-seems-warped/41669 "2026-04-07T19:58:19Z")
Hi everyone, I’m using a Snapmaker U1, it is a really wonderful machine. But I’m running into a bed leveling issue. When I print larger models, some areas come out noticeably worse than others. After checking the Bed M… --- ## [Setting the Heat bed to raise chamber temperature auto turnoff](https://forum.snapmaker.com/t/setting-the-heat-bed-to-raise-chamber-temperature-auto-turnoff/41289)
**Author:** [@vbartlett](https://forum.snapmaker.com/u/vbartlett)\ **Replies:** 4\ **Last updated:** [April 4, 2026, 4:39pm UTC](https://forum.snapmaker.com/t/setting-the-heat-bed-to-raise-chamber-temperature-auto-turnoff/41289 "2026-04-04T16:39:07Z")
Solutions below the question: I am try to print ASA. I have a top cover. I have tried to set the print bed to 100C but after a few minutes it turns itself after a 5 min. I tried the same from Orcaslicer and the same re… --- ## [U1 - how overrule filament detection](https://forum.snapmaker.com/t/u1-how-overrule-filament-detection/40716)
**Author:** [@0rfar](https://forum.snapmaker.com/u/0rfar)\ **Replies:** 27\ **Last updated:** [April 2, 2026, 7:05pm UTC](https://forum.snapmaker.com/t/u1-how-overrule-filament-detection/40716 "2026-04-02T19:05:14Z")
Hi All, I have had a lot of great prints allready from the U1. I am using a combination of the Snapmaker filament that came with the printer and also some Polymaker filament. I print from 4 dryboxes, 2 which are connec… --- ## [Really struggling with TPU jams](https://forum.snapmaker.com/t/really-struggling-with-tpu-jams/40952)
**Author:** [@Zantium](https://forum.snapmaker.com/u/Zantium)\ **Replies:** 19\ **Last updated:** [March 26, 2026, 12:04pm UTC](https://forum.snapmaker.com/t/really-struggling-with-tpu-jams/40952 "2026-03-26T12:04:40Z")
I’ve had my U1 for a couple of weeks now and pla has been fine as you’d expect. I mostly/at least half bought the machine for TPU and different material support capabilities though. I have a “product” I print primarily… --- ## [This error is getting more constant during prints](https://forum.snapmaker.com/t/this-error-is-getting-more-constant-during-prints/41518)
**Author:** [@Cylonmode](https://forum.snapmaker.com/u/Cylonmode)\ **Replies:** 4\ **Last updated:** [March 23, 2026, 10:45am UTC](https://forum.snapmaker.com/t/this-error-is-getting-more-constant-during-prints/41518 "2026-03-23T10:45:12Z")
System Anomaly: 003-0522-0000-0000 \[print\_task\_config\] not allowed to set extruder map during printing! Anyone else get this occasionally? Nothing seems to happen, nothing stops or goes wrong, the printer just keeps p… --- ## [Missing Colors+ False Spaghetti Detection](https://forum.snapmaker.com/t/missing-colors-false-spaghetti-detection/41523)
**Author:** [@fatboy1271](https://forum.snapmaker.com/u/fatboy1271)\ **Replies:** 4\ **Last updated:** [March 18, 2026, 2:43pm UTC](https://forum.snapmaker.com/t/missing-colors-false-spaghetti-detection/41523 "2026-03-18T14:43:29Z")
I was super excited to wake up to the first U1 print of my Easter Eggs in freshly dried ASA only two find two issues: These are supposed to be 4 colors but are only using two Toolheads Spaghetti Detection is pausing th… --- ## [Bed clamps to prevent pei sheet warping](https://forum.snapmaker.com/t/bed-clamps-to-prevent-pei-sheet-warping/41441)
**Author:** [@ramonskie](https://forum.snapmaker.com/u/ramonskie)\ **Replies:** 1\ **Last updated:** [March 12, 2026, 7:49am UTC](https://forum.snapmaker.com/t/bed-clamps-to-prevent-pei-sheet-warping/41441 "2026-03-12T07:49:08Z")
When printing large build of abs/asa the magnetic bed sheet will warp it self off of the magnetic bed. I tried looking for a bed clamps of some sorts but could not find anything. Does anyone else know of a solution? --- ## [Extruder nozzle grinding into prints](https://forum.snapmaker.com/t/extruder-nozzle-grinding-into-prints/40760)
**Author:** [@mikeyman2171](https://forum.snapmaker.com/u/mikeyman2171)\ **Replies:** 104\ **Last updated:** [March 11, 2026, 5:32pm UTC](https://forum.snapmaker.com/t/extruder-nozzle-grinding-into-prints/40760 "2026-03-11T17:32:30Z")
It doesn’t happen all the time, but it happens often enough to make me reconsider buying this printer. The extruder nozzle grinds into the prints as it works, causing either patterns etched into the print that resemble t… --- ## [Realistic temperature dashboard display?](https://forum.snapmaker.com/t/realistic-temperature-dashboard-display/41425)
**Author:** [@faxxe](https://forum.snapmaker.com/u/faxxe)\ **Replies:** 2\ **Last updated:** [March 10, 2026, 7:48am UTC](https://forum.snapmaker.com/t/realistic-temperature-dashboard-display/41425 "2026-03-10T07:48:45Z")
Hello@All Is there a way to change the temperature display in the dashboard to plausible limits? So not up to 1000 degrees Celsius. --- ## [Error: 0003-0522-0005-0006 - Toolhead 4 MCU connection failed](https://forum.snapmaker.com/t/error-0003-0522-0005-0006-toolhead-4-mcu-connection-failed/40933)
**Author:** [@tonsofbuns](https://forum.snapmaker.com/u/tonsofbuns)\ **Replies:** 5\ **Last updated:** [March 9, 2026, 1:01am UTC](https://forum.snapmaker.com/t/error-0003-0522-0005-0006-toolhead-4-mcu-connection-failed/40933 "2026-03-09T01:01:30Z")
Has anyone experienced the above error when you power up the printer for the first time? I have completed the guide https://wiki.snapmaker.com/en/snapmaker\_u1/troubleshooting/u1\_toolhead\_disconnected but the problem stil… --- ## [Organizing multiple plates on Snorca?](https://forum.snapmaker.com/t/organizing-multiple-plates-on-snorca/41369)
**Author:** [@Cylonmode](https://forum.snapmaker.com/u/Cylonmode)\ **Replies:** 7\ **Last updated:** [March 5, 2026, 9:13am UTC](https://forum.snapmaker.com/t/organizing-multiple-plates-on-snorca/41369 "2026-03-05T09:13:43Z")
Why is it, I download a file to Snorca that has multiple plates… Snorca will give me one plate with all the pieces scattered everywhere? Its frustratingly annoying…! --- ## [Domeing of flat surfaces over infill cells](https://forum.snapmaker.com/t/domeing-of-flat-surfaces-over-infill-cells/40948)
**Author:** [@JohnHind](https://forum.snapmaker.com/u/JohnHind)\ **Replies:** 15\ **Last updated:** [February 12, 2026, 3:55pm UTC](https://forum.snapmaker.com/t/domeing-of-flat-surfaces-over-infill-cells/40948 "2026-02-12T15:55:36Z")
I’m printing using the filament that came with the printer and the default settings in SnapMaker Orca. Print quality is generally very good, but I’ve noticed that when I print relatively thin flat designs (around 5mm thi… --- ## [Snapmaker Orca & V1.0.0 upate issue: "Please Select Filament Type."](https://forum.snapmaker.com/t/snapmaker-orca-v1-0-0-upate-issue-please-select-filament-type/41048)
**Author:** [@IKnowSomething](https://forum.snapmaker.com/u/IKnowSomething)\ **Replies:** 1\ **Last updated:** [February 2, 2026, 7:00pm UTC](https://forum.snapmaker.com/t/snapmaker-orca-v1-0-0-upate-issue-please-select-filament-type/41048 "2026-02-02T19:00:48Z")
ISSUE: \* The Print Preprocessing screen asks, “Please select filament type.” Setup: U1 connected to an internal network through a LAN connection only (wifi) U1 has firmware V0.9.4 Snapmaker Orca (2.2.1) running on Win… --- ## [Speed for travel moves](https://forum.snapmaker.com/t/speed-for-travel-moves/41115)
**Author:** [@Bergie](https://forum.snapmaker.com/u/Bergie)\ **Replies:** 4\ **Last updated:** [February 2, 2026, 2:29am UTC](https://forum.snapmaker.com/t/speed-for-travel-moves/41115 "2026-02-02T02:29:23Z")
Hi My printer is extremely fast on travel moves. I makes an annoying clacking sound when moving. I want to slow that down, but in the slicer in “Motion ability” that is greyed out and set to 20000. Where and how can I c… --- ## [DEFECT: Firmware Version 1.1.0 - Touchscreen unavailable during Print](https://forum.snapmaker.com/t/defect-firmware-version-1-1-0-touchscreen-unavailable-during-print/41112)
**Author:** [@IKnowSomething](https://forum.snapmaker.com/u/IKnowSomething)\ **Replies:** 4\ **Last updated:** [January 31, 2026, 6:15pm UTC](https://forum.snapmaker.com/t/defect-firmware-version-1-1-0-touchscreen-unavailable-during-print/41112 "2026-01-31T18:15:47Z")
Steps to error: Updated to firmware V1.1.0. Restarted Klipper but did not manually restart the machine (turn off/on) Ran new print. Screen is now blank and does not come on with tapping the screen. Expected Actions: … --- ## [Wiki Update: U1 z-axis noise (thumping sound) explanation and temporary solutions](https://forum.snapmaker.com/t/wiki-update-u1-z-axis-noise-thumping-sound-explanation-and-temporary-solutions/41107)
**Author:** [@Simon\_Zhi](https://forum.snapmaker.com/u/Simon_Zhi)\ **Replies:** 0\ **Last updated:** [January 28, 2026, 3:23am UTC](https://forum.snapmaker.com/t/wiki-update-u1-z-axis-noise-thumping-sound-explanation-and-temporary-solutions/41107 "2026-01-28T03:23:54Z")
Hey everyone, 大家好， We’ve been closely following the recent discussions here about the U1 Z-axis thumping noise, and really appreciate everyone who shared videos, settings, and test results. 我们一直密切关注这里关于 U1 Z 轴敲击声的讨论，… --- ## [RESOLVED: Snapmaker Orca and U1 ISSUE: Error 401: Unauthorized (See solution)](https://forum.snapmaker.com/t/resolved-snapmaker-orca-and-u1-issue-error-401-unauthorized-see-solution/41047)
**Author:** [@IKnowSomething](https://forum.snapmaker.com/u/IKnowSomething)\ **Replies:** 2\ **Last updated:** [January 23, 2026, 3:30pm UTC](https://forum.snapmaker.com/t/resolved-snapmaker-orca-and-u1-issue-error-401-unauthorized-see-solution/41047 "2026-01-23T15:30:04Z")
I was able to print from Snapmaker Orca when my U1 was operating with factory level V0.9.4 firmware. Snapmaker Orca is version 2.2.1. It did not like the downlevel version and said that the U1 was unsupported. But I had… --- ## [Need to manually remove hotend](https://forum.snapmaker.com/t/need-to-manually-remove-hotend/40976)
**Author:** [@bkuehlhorn](https://forum.snapmaker.com/u/bkuehlhorn)\ **Replies:** 2\ **Last updated:** [January 16, 2026, 10:49pm UTC](https://forum.snapmaker.com/t/need-to-manually-remove-hotend/40976 "2026-01-16T22:49:20Z")
How to manually remove hotend? There is filament in the hotend. Need to manually remove to clear filament. --- ## [Toolhead 2 detached when its attached?](https://forum.snapmaker.com/t/toolhead-2-detached-when-its-attached/40949)
**Author:** [@abaca107](https://forum.snapmaker.com/u/abaca107)\ **Replies:** 14\ **Last updated:** [January 16, 2026, 6:19pm UTC](https://forum.snapmaker.com/t/toolhead-2-detached-when-its-attached/40949 "2026-01-16T18:19:20Z")
Good morning, I recently just set up my U1 when I get to the initial calibration it fails saying the toolhead is detached. It’s like its not even reading that there is a toolhead 2 attached at all. It doesn’t let me resu… [Previous page](https://forum.snapmaker.com/c/snapmaker-products/u1-troubleshooting-guides/93.md) [Next page](https://forum.snapmaker.com/c/snapmaker-products/u1-troubleshooting-guides/93.md?page=2)