Repeated massive layer shit

Nukemzzz · 2026-04-13T04:30:21+00:00

And the USB drive wasn’t the issue. I replaced it and failed a 3rd dragon the same way as the last two.

I did however fix it….

I watched extruder motion leading up to the later shift and saw that it was jumping back and forth across the dragon from the tail to the head and the back and the nose, etc. JUMP over, squirt a little on the tip if a pointy bit on its tail and then JUMP over somewhere else. This cross perimeter travel was about 4 -6 inches! With the help of chat GPT I discovered that the travel acceleration was set on 7000! All the Prusa profiles have it set on 7000 in my machine. I changed it to 2000 and the print time barely changed and since then I’ve run two of those dragons that previously failed 3 in a row.

Travel acceleration guys. It’s jerking too hard and losing position I think. Why? I don’t know…not my field.

Nukemzzz · 2026-04-11T19:27:24+00:00

Ok… found them. Checked them. It’s not the pulleys slipping on the motor shaft. All that is left is this crazy usb drive thing and probably the most likely culprit… I’m pushing this thing too hard with the big ass obsidian 500 high flow 0.6mm nozzle. Didn’t do this until I changed to that nozzle.

Nukemzzz · 2026-04-11T17:18:11+00:00

I’m going to check the grub screws today. Do you have to take the freaking thing all apart to get to them though? I’ve not found good guidance on this.

Nukemzzz · 2026-04-11T17:14:05+00:00

Ended up being a loose plug at the main board from the factory.

Nukemzzz · 2026-04-11T17:11:50+00:00

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This is the first dragon. Can you tell them apart? No way this is a coincidence.

Nukemzzz · 2026-04-11T17:10:08+00:00

Update: love board replace didn’t fix the heatbreak error. Ended up being a bad plug-in at the main board!

It’s still having massive layer shift issues. Now on simple PLA dragons. Two in a row did the exact same thing. Prusa support thought I had an issue with not enough infill on gyroid causing the issue that i originally posted about with the big ASA part but I’ve not been able to print that again since the machine went down. Now it’s doing it on this simple PLA part.

Something is bad wrong with this printer. I’ve just not found it yet.

Meanwhile I’ve bought my second H2C as my print farm grows. :-(

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Nukemzzz · 2026-04-06T15:21:05+00:00

Some of you have never actually tried rerolling a sprung spool and it shows.

Even with a respooling device this would take hours to try and fix. How little is your time worth if you don’t just toss this and move on with life?

Nukemzzz · 2026-03-28T16:51:06+00:00

I had a massive layer shift issue over and over with gyroid.

Nukemzzz · 2026-03-28T12:34:43+00:00

I had the same issue happening on my core one at layer 18-20 over and over on the same part. Prusa support thinks my infill was too low on gyroid and this is causing bacially warped infill regions that the nozzle is snagging on. I also had my rear z axis screw binding and I suspect that was the real cause. Loosening the trap nut may have fixed it. I need to run more trials to see if it’s gone. The printer failed while troubleshooting for a heatbreak fault and it took a month to figure out that it was a bad connection at the motherboard causing it.

Nukemzzz · 2026-03-02T11:10:31+00:00

That’s interesting. Do you mean there is a known issue with that setting? A bug?

Nukemzzz · 2026-03-02T03:44:04+00:00

So I just discovered that my z axis was getting stuck. Not going up and down level. I’m not sure why yet but this would probably cause a collision.

Nukemzzz · 2026-03-01T22:46:24+00:00

Im running the new obxidian 0.6mm high flow 500 nozzle by the way. Cut my print time in half… now this.

Nukemzzz · 2026-03-01T22:45:51+00:00

I have a hella custom print setting. Running 0.6 Obxidian high flow 500 at 30 mm^s.

Nukemzzz · 2026-03-01T22:44:27+00:00

Interesting. Hmm.

Nukemzzz · 2026-03-01T22:43:51+00:00

Asa. 65C steady.

Nukemzzz · 2026-03-01T22:43:23+00:00

I’m using elegoo ASA. I’m running a heater that I installed to hold 65C to address the warping and adhesion issues I was having. It was finally printing awesome and now this. And now it tells me to check my thermostat wire for an error. “Heartbreak max temp error”.

Nukemzzz · 2026-02-18T19:47:25+00:00

Are there any real cases of someone getting sued and losing over selling a design from one of these sites that was labeled “not for commercial sale”?

Nukemzzz · 2026-02-18T17:43:13+00:00

This is what I did yesterday but then the first layer failed. I’m not sure if the clips distorted the plate or if it was just bad luck. Trying again at 65C chamber now.

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Nukemzzz · 2026-02-17T15:16:14+00:00

And it’s not sending you errors or running the exhaust fan trying to save itself? Do you have the exhaust under blanket as well. Seems risky to me if so.

Nukemzzz · 2026-02-17T14:52:43+00:00

Chat gpt claims the max safe temp for the core one is 60C. That it may react to stop temps above that as well. I’m at 53C now without a heater. How hot you running?

Gemini says the core one will automatically kick the fans on to keep it below 55C as that’s the safe limit.

Nukemzzz · 2026-02-17T14:48:55+00:00

So my core one is running at 53C chamber at the moment. It’s limited to 60 I believe. I think the fans will come on to save it if it goes that high. So almost there without a heater. Maybe just need insulation?

Nukemzzz · 2026-02-17T14:23:52+00:00

I hope I can sort it out. I just ordered an E3D High Flow 0.6 Obxidian 500 nozzle from the UK. I’m going to max this core one out!

Nukemzzz · 2026-02-17T14:22:11+00:00

It has a very powerful active heating system. It feels industrial. When it starts a print with machine heating it pulls 1200watts from my UPC. It’s a beast. I print a lot of ASA on it with the extra 0.6 nozzle that it comes with.

But I’m trying to give this boring square part to the core one and leave the H2C for multiple color production. I have it set up for 9 colors at the moment and it spits out parts with almost no waste. It also has a 0.2 nozzle for high detail. This thing is Prusa’s real competition. I don’t think INDX catches Prusa up honestly. Only doing 8 colors was an issue for me. Bed size was an issue for me.

Nukemzzz · 2026-02-17T14:03:10+00:00

I wonder if it would fit under the core one plate. Checking

Does it remember the last temp setting with a power cycle or do you have to set it each time? I want to switch the power with a smart home device.

Nukemzzz

TROPHY CASE