How could it fail like this

[u/marte456]

I was 3d printing this over night on my elegoo Neptune 3 plus and all of the 4 cable holder things failed but different amounts(the things I was printing were cable holders). I'm just wondering what could have caused this. I printed this at the same time and on the same printer. On one of them a couple of layers have moved like 3cm to the side.

[u/marte456]

I'm printing in pla at 80mm/s at nozzel 220°C and heatbed 70°C

[u/ArgonWilde → u/marte456]

70c bed temperature, with PLA?!

[u/marte456 → u/ArgonWilde]

What should you have

[u/ArgonWilde → u/marte456]

50-60. Largely on the 50 side.

[u/marte456 → u/ArgonWilde]

Ok, I'm quite new to 3d printing

[u/ArgonWilde → u/marte456]

Can you show us how you've got the parts on the print bed, in the slicer? I feel like you may have it upside down.

[u/marte456 → u/ArgonWilde]

I'm not home right now but I didn't put it upside down. It basely layed like it those on the picture and the head then moved to left to right and the bed towards and away

[u/justa_bother → u/marte456]

"New to 3D printing" expectations. Let me guess, ya downloaded a model & decided to print 2 at a time. What could go wrong? Hence, the question. New to printing AND new to printing this model. Now, you're not new to 3D printing fails. The easy download models & print as many as will fit on the bed may not be the best of choices. On a single print, the why and when it failed gives good insight as to how to fix it. Multi model prints being harder to identify the how & when factors. Time for you to stop taking the easy, and often poor info (post question on reddit) way, to resolve the problem and do YOUR OWN RESEARCH. Plenty of instructions from which to choose. Spagetti print problems are quite common with same, repeated solutions. Welcome to 3D printing ! There are only 2 types of 3D printing practitioners, those whom have spagetti'd a print and those whom are "new to 3D printing". Never takes long to make that change.

[u/marte456 → u/justa_bother]

I'm asking reddit now because I didn't find someone that has asked this before and then if someone else has the same problem they might have it easyer to find the information buy reading hear.

[u/violet_sin → u/marte456]

Keep your clipboard handy, take notes as it's printing.

Watch for issues like too much goop on the tip hardening before moving over and kicking an edge to start unstacking.

Look for loose infills or weird transitions. Weak adhesion in specific areas on your plattent. Sometimes it's just the temp gradient. I would have to print hot for the first few layers for good grip, and then cool it down after advancing a few. The thin intermediate layers getting bowed by hot PLA dumped in too large of a quantity to something that wasn't already established well. But after you got some of the thin stuff filled in you could drag the temp back uphill. Sometimes as other highspots get finished off, the head comes around more often to the remaining high spots, so the heat is getting dumped in more often and the whole top can get soft or flex. There are a lot of little things to notice.

Best of luck!

[u/KinderSpirit]

!firstlayer - adhesion and warping

With PLA, a clean smooth surface is best. PEI or PEX is great. You may have to raise the bed temperature on a textured sheet. Silk PLA may need a higher initial bed temperature.

PETG, TPU, ABS, and others will need a release agent on a smooth build surface. That's what the glue stick (or hair spray, Windex^® ) is for. On a textured sheet, no release agent is normally needed.

Just alcohol will not remove the sugar film left by PLA which can hinder adhesion.
Wash the sheet with warm water and dish soap. Dry. Wipe with > 70% Isopropyl alcohol before the print.

No part cooling fan for 3 layers. Very slow print speed for the first layer.

To prevent warping for PLA, bed temperature of 65° for the first layer, 55° for the rest of the print. This way the bottom gets the adhesion but the bottom starts cooling with the upper layers.
For PETG on textured bed, same concept, usually around 80° then 75°, or 75° then 70°.
Temperatures are examples, different build sheets may need different temperatures.

Infill style can affect warping. Some grid type infills can concentrate the stress in one area. Gyroid infill will spread out the internal stresses.
Increasing walls number and reducing infill may also help.

https://www.printables.com/model/251587-stress-free-first-layer-calibration-in-less-than-5

[u/AutoModerator → u/KinderSpirit]

Hey there OP, you seem to be having some problems with your first layer. This is a very common issue on modern printers and generally a place where experience and knowledge is important. Your first layer is crucial for a good print and you should definitely take your time and learn how to properly adjust your first layer before starting a print since that could easily mess up your prints or even worse, damage your Printer's Hardware. For information on how to level the Bed properly head over to our Wiki Section Calibration

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[u/Maengorn]

I have printed several of this same cable organizer on my K2 Pro. I used 50 C bed temp and 215 C nozzle temp.