Posted: 7/30/2026 9:52:07 AM EDT
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I’ve got a qidi x-plus3 and am trying to print a license plate frame (positioned vertically due to build volume). It has failed in a really weird way at the same layer twice in a row. I’ve not watched it super closely because it’s a multi-hour print but I can hear the printer crashing from the next room. It sounds like it’s losing its position relative to home and suddenly appears to be trying to build layers somewhere off the build plate in the back corner. The print head is crashing into the end of the rails, and when I cancel the print and it returns to XY home, it crashes into the other corner before it finds home. Anyone ever run into something like this? I’m going to make a couple of dummy parts as tall as the part I’ve been trying to make and see if it’s an issue with this particular gcode file or if it’s something with the printer itself and will report back |
The hardest part about a zombie apocalypse will be pretending I'm not excited.
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I guess it could be. The toolpath doesn't appear to exceed the build volume here, and I'm not getting any errors from it: Attached File Here's about where it's failing: Attached File |
The hardest part about a zombie apocalypse will be pretending I'm not excited.
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Originally Posted By Blob: Pics? What material? The layer shift is caused probably by the material warping into the nozzles path causing either the steppers to lose steps or the belt to skip teeth on the drive pulley. I don't have any pics of the part on the build plate because I took them both off to see if they were failing at the same layer (they are). It's fiberon PETG-CF through a 0.6mm hardened nozzle. The print looks great up until that point, although on the second iteration the leftmost support tree had gotten knocked loose. What's weird is that it's happening at the exact same point in the print. |
The hardest part about a zombie apocalypse will be pretending I'm not excited.
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Originally Posted By Blob: Just because I’ve already taken the pic lol: Attached File ETA: the dashes on the edge of the part are from some breakaway supports I added in the model to keep the part from flopping around during the print. |
The hardest part about a zombie apocalypse will be pretending I'm not excited.
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Roll the slicer preview up to that level and look for collisions in the tool path. I've had that happen before. It could also be something wrong with the printer and it's binding or colliding with itself and causing the skip. Try jogging the Z to that height and move the gantry around by hand. I could print this for you on the new IDEX |
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I've got a test print with a couple empty boxes as tall as the part to see if it's anything with the printer, but I'll move it around by hand when it's done. I'm tempted to take you up on it 1, because I want to see an IDEX part in real life, and b) because this is probably the 6th or 7th time I've tried to make this part and I'm starting to think it's cursed lol |
The hardest part about a zombie apocalypse will be pretending I'm not excited.
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Originally Posted By thezentree: I've got a test print with a couple empty boxes as tall as the part to see if it's anything with the printer, but I'll move it around by hand when it's done. I'm tempted to take you up on it 1, because I want to see an IDEX part in real life, and b) because this is probably the 6th or 7th time I've tried to make this part and I'm starting to think it's cursed lol Come over to the shop and I'll give you a tour |
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I took a closer look at the tree supports and found a nozzle imprint on both in the exact same spot. I think they both broke free from the bed and caused the print head to jump and the belt to slip. Trying again with slightly different supports. Originally Posted By Blob: Come over to the shop and I'll give you a tour I'm gonna take you up on that sometime. Sooner if this next attempt fails 
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The hardest part about a zombie apocalypse will be pretending I'm not excited.
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Well that worked this time. Finally. Super weird that those two failures happened at the exact same spot in the exact same way. Makes me think the slicer glitched there. Anyway, now I have a long-lead, expensive, and time consuming license plate frame that I should have just ordered off Amazon for $4
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The hardest part about a zombie apocalypse will be pretending I'm not excited.
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Originally Posted By thezentree: Well that worked this time. Finally. Super weird that those two failures happened at the exact same spot in the exact same way. Makes me think the slicer glitched there. Anyway, now I have a long-lead, expensive, and time consuming license plate frame that I should have just ordered off Amazon for $4 Just means you need a bigger printer. An H series will print that thing lying down. 
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Originally Posted By -Obsessed-: Just means you need a bigger printer. An H series will print that thing lying down. You better believe I considered it, but I am holding out for someone to make a big multi-toolhead printer. |
The hardest part about a zombie apocalypse will be pretending I'm not excited.
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Another possibility is heat/board failure. I had issues with an Ender where, when HOT (printing ABS), it would partway through skip to the other side of the bed. Turned out the heatsinks on the board were crap, and the cooling fan had failed. Upgraded those, never had a problem (with that issue) again. |
| It was a mechanical failure in this case. One of the tree supports broke partially free and made the print head skip a belt tooth or two. Just odd that it happened exactly the same way twice in a row. Same layer, same impact point. It’s got a couple hundred hours of print time on it since then and has run fine (except when it’s had other issues lol) |
The hardest part about a zombie apocalypse will be pretending I'm not excited.
Easily irritated engineer of odd things
Joined:
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Originally Posted By scul: Voron v2.4 350mm w/ StealthChanger. Gotta build it yourself, though! Originally Posted By scul: Originally Posted By thezentree: A big multi tool head printer *that's not $5k lol Voron v2.4 350mm w/ StealthChanger. Gotta build it yourself, though!  
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Once you realize that all power comes from the credible threat of the use of deadly force, and the gov't hates you, most things become easy to understand..
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Originally Posted By thezentree: You better believe I considered it, but I am holding out for someone to make a big multi-toolhead printer. |
"Fully-loaded, safety off. This here is a recipe for unpleasantness." - Malcom Reynolds
"He's a precision-guided asshole who only deploys on deserving targets." - Grok
"He's a precision-guided asshole who only deploys on deserving targets." - Grok
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Originally Posted By VacaDuck: Someone found patent info for a 10 head unit from Bambu. The H2X as it is being dubbed. Patent was filed just a couple weeks ago. Ten complete hotends with filament paths. Pretty iintriguing. Basically looks like a ten-filament INDX. Also shows a ten spool "Super AMS" to feed them all. Attached File Attached File |
Easily irritated engineer of odd things
Joined:
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EE: 100% (5)
MN, USA
| that issued patent or patent pending? I would assume Bondtech has the inactive toolhead patent locked down? |
Once you realize that all power comes from the credible threat of the use of deadly force, and the gov't hates you, most things become easy to understand..
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Originally Posted By Rat_Patrol: that issued patent or patent pending? I would assume Bondtech has the inactive toolhead patent locked down? Bondtech has three specific patents for INDX (all pending, as are Bambu's I presume since it takes years, even when accelerated, to get actual patents issued), and I'm guessing Bambu worked around them. One was a method of picking up/putting down the nozzles, and another one, which I'm more curious how they are working against it, is a way to disengage the filament feed wheels to allow the filament to stay with the nozzle and yet, disengage the extruder gears. From what we can see from Bambu's patent application of their own, they too have a way of picking up and putting down toolheads (which, isn't new to Bondtech, either), and Bambu also has a way of using a single set of extruder gears on all hotends. Now...does that mean that the filament "stays in the nozzle" which specifically is the Bondtech patent protection? Guess that remains to be seen. I'm not a lawyer but I think having an AMS, it would be easy to retract the filament 1" out of the nozzle, thus allowing you to simply unload the toolhead without the need of a patented mechanism to allow the filament to stay in place, and then, after you grab the new one, the AMS auto feeds the next filament the 1" back into the extruder gears. Just a guess of course. Bambu is too above board to just flagrantly steal IP so conspicuously. So I'm guessing they have novel solutions of their own. Which is fine by me. Multiple ways of doing things is a great way to innovate and also create healthy competition which can only be good for consumers. |
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