3DPrinting

Glue stick. 65C bed 220C extrusion Set Z lower Clean bed with soap, not IPA. IPA dries and redeposits oils. Check that bed is actually heating evenly.

You have already gotten a ton of good suggestions already but I'd like to vouch for the Ellis 3d printing tuning guide and Suave Mega Hold Hairspray (huge pink can).

If you follow it from beginning to end you will have those prints coming out looking clean and actually sticking to the bed. It will take you a few hours but I promise you won't regret it.

I find in 3d printing, sometimes it actually matters in what order you do your tuning.

Hot tip: Read the instructions first before you start doing anything. I kept making mistakes because I didn't do that

https://ellis3dp.com/Print-Tuning-Guide/

I had similar issues. Turns out I was using 70% ipa. Switching to 90% fixed it.

I feel you... Been there... Too many times until the hobby was just a frustration and not a hobby anymore.

Are you sure you can't fix the z offset? My old printer was as bad, I had to manually level it (because the auto sucked )every time and I need to do it a bit closer than the auto level wanted it to and the instructions said. It was so close the first layer was extremely flattened, and I had to try many times to level it. First did I only need to do the bed leveling perfectly (a bit too close) then after I switched to glass did I have to play with the sensor (screwing it a bit further away than their instructions). I did both calibration for like 15 min to an hour.... But when I had got it right did it print beautifully! I think if I let it on until next time then I wouldn't need to do the calibration, but it was loud so I had to turn it off. Btw i think mine was just weird that it calibrated it self only when I started, as in how high up it should be for the first layer so I could just screw up the bed to get it closer.

But now have I switched to bambu lab (enclosed) and it is so easy that it is scary, now I actually trust it and can do big prints that will take more than 3h. I only hit print and it works right away it felt so weird the first 10 prints. I felt empty, my job had been taken away by a robot. Should it be this easy? Why can I use the default values in the slicer? What do you mean I can have it on its default speed and not needing to do it super slow in the beginning? Crazy stuff. It feels like an adult and my other printer was a chaotic 6 years old, they can if they try but they didnt try most of the time....

Also have you tried placing your creation in any other z axes rotation or moved it a bit from the center? I had one print that worked ape shit every time in one direction, switched it a bit and rotated it and then it worked right away. But yours seem to have worked well until it start lifting off from the bed so I think playing with the z offset is the way to go. Be careful tho I switched to glass because it was hard to get it off afterwards, with glass did it pop off right way when the bed wasn't heating up anymore.

Other stuff: I had heat on at 60 at all time and it was pretty hot in there because of the printer (the room is normal room temperature otherwise), maybe your room is too cold for it, could you build an enclosures? Or is the table it is on shaking a lot? Glue and tape and whatnot never worked for me.

What does the underside of that print look like? Maybe nozzle too far from the plate?

Have you tried cleaning the plate with dawn dish soap vs IPA? Soap is much better IMO at actually cleaning. I do this with nitrile gloves to make sure I'm not getting any oil on my print surface but there are definitely a lot of variables so you may have already tried my suggestion.

• verify actual bed and print nozzle temp using IR or contact probe. Thermistors can die and cause too low a temp.
• fully wash bed with soap and water, not just IPA.
• try a different spool or brand of filament. Sometimes whole spools are just formulated badly and it won't ever adhere right. I've tossed a few spools that wouldn't ever print correctly no matter the settings.

My adhesion was like this until I washed my bed with dish soap, and now I have to chisel my prints off with a hammer because they stick on too well.

As others said, dish soap over IPA. I've also had shite PLA before as others mentioned. Find a good brand and stick with it. Also, magigoo is amazing. Basically glue but not glue. Designed to stick when the bed is hot then release when it cools. I add magigoo any time I have a long print where I worried about potential warping or lifting.

With PLA? Really? What plate material / surface do you use?

Maybe change your design if the geometry of the part makes it exceptionally prone to warping at the base, and/or it's too tall or top-heavy for the bottom surface if your printer is a bed slinger.

EDIT: nevermind, I didn't see your image. This almost looks like your roll of PLA is bad. Maybe try another brand?

If you use paper towels to clean your bed: Do your paper towels feel 'papery'? If not they might be waxed.

If you use reusable towels to clean your bed: Do you use fabric softener? Don't.

Use hairspray

I need to point out, IPA isn’t magical. If you’re just giving it a quick swipe, or mopping it around, you’re not actually cleaning it you’re just moving the mess around. It’s fine for some in between stuff, but scrubbing with soap and warm water is going to be much more efficient at cleaning the plate.

After all that maybe your bed has degraded or perhaps a temperature probe has come loose somewhere and needs new paste.

I fucking love it! I have been there so many fucking times to the point of putting a hole in a wall. Best part is I'd give up walk away for a month or so then literally turn the stupid fuck on and press print and it would print just fine. I just use glass on one printer and carbon fiber on the other. I had pei once threw that shit right in the garbage. A good scuff with 80 grit sand paper on both and wash off with rubbing alcohol. I did have an issue once with a bent touch probe that would fuck my z offset so the first layer wouldn't actualy be low enough.

Try higher bed temps only for the first layer or two, then lower it.

That used to help me with getting abs to stay put.

I put my PEI plate in the dishwasher and then used glue stick and it fixed my problem but YMMV

Dude thats so fuckin frustrating :/

does everyone always print onto the bed at ~60°C?

That depends entirely on the result you get and the Filament you use. Also, keep in mind that whatever you set your bed temperature to and what the printer reports, very likely isn't what you actually print on. For example, on my Ender 5 Plus, I have a glass bed and had to set my printer to 75°C while on my Voron 2.4, I can simply set it to 66°C and get the surface temperature to around 60°C.

which means that you need to measure the temperature on the surface of the printer and not rely on what the printer is reporting (unless you actually measured the temperature and can guess the actual temperature). The more mass that the print has to heat up, the longer it will take for the print surface to actually reach that temperature.

Personally, I aim for around 60-65°C for the print surface for PLA. I always had good adhesion for my prints at that temperature.

I had a similar issue with an Ender 3, it wouldnt adhere no matter what. My solution was to level the bed real close to the nozzle using thinner paper or whatnot. From there you can start tweaking your first layer height

3 Thoughts as I had simular Issues!

Is the Bed Leveling correct? A Loose Print Head can give false results, big issue I had once with my P1S.

Try Changing the width and Hight of the First Layer to smaller Values, no clue Why, but it Fixed this kinda issue before for me!

In Software, Is the Model Properly put on the Ground and not floating? Happened to me before, since Supports where turned off I didn't notice it

I had similar issues tho on a custom designed printer. The issue ultimately was the adhesive for the silicone heater for the bed was failing ans slowly delaminating from the bed. When I felt the heater it was plenty warm... But when I felt the center of the bed where it prints it was a lot cooler. I had to replace the whole heat pad. I don't know what yours uses to heat the bed but my guess would be that it is also on the way out.

I tried the dish soap method and ipa, and what eventuslly got my pei bed to actually work was a quick wipe with acetone. You're not supposed to use it on textured PEI, but I have been for about a year now and it's still going strong with one bed

Have you tried recalibrating the probe? I had the same issue with my Sovol SV08 where no matter how much I tried, nothing would stick, until I recalibrated it.

Also, how long do you preheat before printing? Depending on the beds material things can move quite a bit with heat. Sometimes 0.01mm can make the difference between a successful and a failed print. Try heat soaking your bed and nozzle at working temperature for at least 1/2h before calibrating and printing to give time to everything to expand.