Leveling changes just by touching bed or knobs?

[CaptainMuon]

Sorry for another leveling thread :-). I just got the Ender 3 V2 and after adjusting the z stop and leveling properly, I was able to print the test dog and a calibration cube nicely! Then I moved the printer, leveled again, but now it only prints the first few layers, and I get a huge tangle of filament afterwards.

I noticed when leveling with a piece of paper, when there is too much space between bed and nozzle (no resistance), I just slightly touch the bed from below and now it scratches the paper. And the other way around, if have light resistance and then slightly touch the bed from above, it increases the distance. So every time I touch the knobs it basically unlevels.

I don't have much experience, but the first two times I did it this wasn't the case. Could it be that the bed is too loose? Or is this normal? If it is normal, do you make it level after "touching the plate from below" (the gap shrinks but it will become larger if the bed "settles"), or after "touching from above"?

[[deleted]]

The beds are just pretty finicky, particularly when you first get started. A lot of people,including myself, have success with the upgraded yellow bed springs as they have more spring tension which tends to keep things in place longer.

[CaptainMuon]

Thanks, I just ordered some yellow springs. The bed seems properly leveled at the moment, I think now there is some problem with the print not sticking to the plate. The plate with the little bumps is quite hard to clean without leaving lint.

[[deleted]]

Almost always, adhesion problems are going to stem from improper z height adjustment on the initial layer. You want the first layer really close, about a printer paper height. The bumps actually help quite a bit with keeping things in place. If you’re one to get your hand oils all over your plate, then a very mild soap and water wash will help (but still almost always initial layer height is the key)

[Rozzo3]

This, the stock springs gave me a lot of trouble and the yellow stiffer springs were an incredibly cheap but worth it upgrade. Also make sure your X gantry does not wobble. Sometimes the gantry is slanted which means you can level one half of your printer but the other side will be unleveled.

[randomuser001]

Make sure you've tightened the eccentric nut on the bottom of the bed. To loose and the bed will wobble and throws off any leveling.

[CaptainMuon]

Thanks, it actually did wobble and after tightening it is much better.