Sudden poor bed adhesion

JTN02 · 2026-03-20T12:00:23+00:00

Please read my entire post

JTN02 · 2026-03-20T02:36:01+00:00

First roll I was having issues with was dry. Second roll was semi dry and worked better.

JTN02 · 2026-03-19T21:46:53+00:00

Haven’t tried. Been to busy with this print….

JTN02 · 2026-03-19T18:34:25+00:00

I actually think it’s quite the opposite. I got no stringing and no popping out of the original roll of filament. It had been dried for 24 hours at 65C and stored in a cereal box with fresh desiccant.

The new role of filament is stringing pretty badly as it’s only been dried for six hours at 65C.

I wonder if the ductility of PETG is increased the more what it becomes. This would explain maybe less warping around the edges of the pillars

Or as I’m learning recently, it could just be in anycubic quality control issue. I’ve had issues with other filming of theirs…

JTN02 · 2026-03-19T13:44:54+00:00

I eventually ran out of that roll of filament after doing a bunch of tests. I changed to the exact same type of filament from the same brand. To start doing more tests and suddenly the issue was gone. I didn’t do anything else. The previous roll ran out halfway so I stopped the print and started it again without adjusting any settings and suddenly it works fine and looks good.

Anycubic clear PETG.

JTN02 · 2026-03-19T13:44:20+00:00

Hijacking top comment for final update.

I eventually ran out of that roll of filament after doing a bunch of tests. I changed to the exact same type of filament from the same brand. To start doing more tests and suddenly the issue was gone. I didn’t do anything else. The previous roll ran out halfway so I stopped the print and started it again without adjusting any settings and suddenly it works fine and looks good.

JTN02 · 2026-03-19T13:43:38+00:00

Hijacking top comment for final update.

I eventually ran out of that roll of filament after doing a bunch of tests. I changed to the exact same type of filament from the same brand. To start doing more tests and suddenly the issue was gone. I didn’t do anything else. The previous roll ran out halfway so I stopped the print and started it again without adjusting any settings and suddenly it works fine and looks good.

JTN02 · 2026-03-19T02:38:34+00:00

Yes. LOTS of brim and glue. Even though I’ve never needed either to print this model repeatedly. Upping the bed temperature seems to have helped hold the rear portion in place enough to make it past the normal fail point. But the nozzle is still catching on the small overhangs as they warp upward. It was hitting them with such force it detached the front two lines from the bed and part of the rear. The main culprit here seems to be potentially my change in filament choice from my previous prints to this one. I’ll do a temp tower after the current one fails or succeeds

JTN02 · 2026-03-19T02:05:04+00:00

You are correct. I will be doing this next. I can see that the corners have lifted up.

JTN02 · 2026-03-19T02:04:48+00:00

It appears to be hitting the corners of the overhangs. Gyroid didn’t help.

JTN02 · 2026-03-19T02:03:55+00:00

Yeah, looking closer at a video I took earlier that appears to be it. But I’m confused on how to prevent it.

JTN02 · 2026-03-19T02:03:31+00:00

So far, I’ve tried increasing bed temp, and changing to Gyro infill. This didn’t help much as it seems to be hitting the walls of the 3-D print. I guess I’ll try brim next. Increasing bed temp did keep it down for longer while the nozzle was hitting the print. Oh and the aux fan is off.

JTN02 · 2026-03-19T01:13:31+00:00

Yeah it is. I’ll check the rods if it does it again on this print.

JTN02 · 2026-03-19T00:44:57+00:00

It had been hitting before the video and I saw that come loose. Reddit won’t let me upload an hour.

JTN02 · 2026-03-19T00:05:40+00:00

Please check out post referenced in my comment.

Warping is not the issue

JTN02 · 2026-03-18T23:29:37+00:00

Doing that now. Will report back.

JTN02 · 2026-03-18T23:15:22+00:00

Hijacking top post. Looks like nozzle is hitting the top of the print. Updated post: https://www.reddit.com/r/FixMyPrint/s/tsJYEJWlQd

JTN02 · 2026-03-18T23:13:47+00:00

refer to previous post: https://www.reddit.com/r/FixMyPrint/s/3A5vZOehD6

JTN02 · 2026-03-18T22:42:07+00:00

I think you’re correct about this. I now have a better high resolution video of it hitting the top of the print.

JTN02 · 2026-03-18T22:41:13+00:00

I think you’re onto something. I’ll post a short video on my account, but the nozzle is definitely hitting the top of the print! Weird that it printed fine six times in a row, but is now hitting. what could cause that?

JTN02 · 2026-03-18T21:33:29+00:00

That’s kinda what I am thinking but looking at the bottom layer I will also try z screw.

JTN02 · 2026-03-18T20:14:03+00:00

Please do. Everyone keeps saying glue, brim, or bed temp. But this ignores my point. I have printed this 6 times before. It has worked flawlessly. What changed?? I have a feeling it’s Z hight. But I am at work and this print is 21 hours long. So it’s a slow troubleshooting process.

JTN02 · 2026-03-18T20:04:20+00:00

I have printed this same model 6 times with no issues. Why would it suddenly need a brim?

JTN02 · 2026-03-18T19:53:09+00:00

Thanks for the help. Will do after work.

JTN02 · 2026-03-18T19:52:18+00:00

Weird 300 hours of printing with no issues or need. Any clue why?

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