All of a sudden I have zero bed adhesion - General discussion, announcements and releases

RE: All of a sudden I have zero bed adhesion

Tom Valeri — Fri, 22 Mar 2024 15:11:41 +0000

Thank you all for your suggestions. I went through the cold pull process and about halfway through shoving filament through the hot end the flow roughly doubled. When I did the actual pull it was clean as a whistle. Afterwards I did multiple first layer calibrations tweaking the z-offset and reached a point where the adhesion is better than ever before.

thanks!!

Diem — Fri, 22 Mar 2024 07:46:24 +0000

Re-run the first layer calibration and show us the result *on the print sheet*.

Cheerio,

RE: All of a sudden I have zero bed adhesion

Thejiral — Fri, 22 Mar 2024 07:44:46 +0000

I would still redo z-calibration. Try to go lower (optimally until the lines stick) but stop if the patch surface is starting to look "wavy on the underside". The patch can look already somewhat ok when you are actually still a bit too high.

It can be of course that you have a partial clogg as well. Does the non-sticking line look too thin or is maybe interrupted? A cold-pull should resolve that. If you print, especially PLA too cool clogs can occur frequently, but that also depends a lot on the brand, with some more prone to that than others.

RE: All of a sudden I have zero bed adhesion

Tom Valeri — Thu, 21 Mar 2024 22:06:28 +0000

I hadn’t thought of that. Just checked though and it’s rock solid but thanks for the suggestion!

RE: All of a sudden I have zero bed adhesion

John Weaver — Thu, 21 Mar 2024 20:21:06 +0000

Is your PINDA probe screwed in tight? Mine worked loose and I started having all kinds of Z axis problems, but at first I thought it was bad adhesion.

RE: All of a sudden I have zero bed adhesion

Tom Valeri — Thu, 21 Mar 2024 18:21:47 +0000

That was the first thing I tried but to no avail.

RE: All of a sudden I have zero bed adhesion

JoanTabb — Thu, 21 Mar 2024 17:55:52 +0000

Try washing the build plate with hot water and dish soap. Rinse with hot water dry with plain paper towels. And keep your fingers off the build surface Regards Joan

All of a sudden I have zero bed adhesion

Tom Valeri — Thu, 21 Mar 2024 16:14:05 +0000

So I printed some things a couple days ago and all was well. Yesterday I tried to print what should be the simplest thing imaginable, a cube 50mmx50mmx3mm and absolutely nothing would adhere to the bed. I cleaned the plate which didn't help. Tried a different filament which also didn't help. I then tried the whole calibration and if I tweaked the Z-offset done by -1.2mm it would sort of adhere but only on thick lines like the initial purge line. As soon as it started to print the border around the print it wouldn't adhere at all. I tried lowering down to -1.3mm but that made things worse. I slowed all the speeds down and that didn't seem to help at all. When I run the Z-calibration the ending "patch" which is a little rectangle seems to print okay but all the lines leading up to it basically have zero adhesion. I'm guessing I have a flow rate problem although I used a nozzle cleaner to poke up into the nozzle and didn't feel any obstruction. I've ordered the correct metric wrenches to remove the nozzle so I can replace it but wondering if there are any other things I should be trying?

Thanks much for any advice.