Ender 3 pro how to stop lifting prints and clogging.

I've found slowing the print speed helped with mine to get the first layer down correctly.

Some people swear by glue sticks to make their prints stick to the bed.

I have one printer that lifts on large prints because the bed is not at a uniform temperature all across its surface. I resorted to heating the bed with a heat gun (carefully so as not to overheat it) until the print was about a half inch high and no longer likely to warp. I never got around to experimenting with the bed heater and its temperature.

I swear by gluesticks !!! for awhile before gluesticks, I swore by blue painters tape. BUT after every print, the remaining glue has to be scraped off with a putty knife.

I manually level the bed and try to apply gluestick while heat bed is relatively cold, or at least before the heat plate gets toasty.
Try to keep the glue in the print area, and dont miss spots even where the moat is printed.

My printer came with an instruction page that also serves as a feeler gauge. The paper slides under the nozzle with just a bit of resistance, not too tight, and not so loose the paper slides under the nozzle withouty touching it. I actually used a feeler gauge to level, but had better luck with the sheet of paper.

opalko , what ended up being the issue that you were running into? was it all just related to settings?

You could try the 3D-benchy I sliced for Opalko earlier in the year. Also that thread has a lot of other advice that might be helpful.

The 3D-benchy is in this comment: /technologies/3d-printing/f/forum/52932/ender-3-pro-continual-issues-after-initial-successful-prints---updated/209825

Hi ntewinkel!

TL;DR: I have not mastered it but it's better, LOL! 

I would like to say I identified one thing that was the cause but that isn't the case. I have had many successful prints since I last posted on here but many messes as well. The biggest thing that helped me was having patience and realizing this is not a Star Trek replicator that works perfectly each time. More directly, when I slowed down printing speed, increased bed temp (my printer is in a cool basement) I had better results. Glue sticks, clean mats made no difference for me. As a test I printed one part 28 times successfully without removing or wiping the bed down before having a failed print (the arms on this thing and failure was due to filament getting stuck).  The base, screw, and turn knob printed perfectly the first time around!... I have had other prints Iwhere I cleaned it fastidiously and had it fail. ¯\_(ツ)_/¯ 

1. Level your print bed

2. Dry out your filament, and put it in a dehydrator.

3. Clean your print bed, use high proof alcohol, a gentle scourer.

4. Heat your bed, at least 60degC, make sure your filament temperature is also appropriate for the filament, 200degC is typically good for PLA.

5. Consider turning off fan assist, or turning on fan assist. Try with either and see how well it does.

6. Try using a 'raft' to help for adhering prints to the bed.