a problem with a stuck filament

[reble 3]

I was trying to change the filament and  the filament wouldn't back out of my Ender 3 pro 3d printer in the normal way.  I had to unscrew the nozzle because the filament was stuck in the nozzle. After unsticking the filament I screwed the nozzle back in and re-feed the filament in. The bed leveler program isn't printing right. See the 2D drawing (the drawing isn't exactly to spect's).  Auto nozzle home is in red in the drawing. The blue circles and blue lines are where the 3D print is messing up, some of the squares and lines aren't staying stuck to the bed even with the glue.  Before I tried to pull the filament the normal way and before I unscrewed the nozzle. The printer was working 100% aok. I have already 3D printed a few files.  I messed up somewhere.

 

 

[GregValiant 1,492]

Taking out the nozzle and putting it back in may have changed it's height relative to the "trip point" of the ABL sensor.  A quarter turn is .25mm and that can make enough of a height difference that it affects bed adhesion.

Try adjusting the Z offset in the printer to move the print head down closer to the bed.  Try 0.1mm at a time.  I don't have an ABL so I don't know if you will be adding or subtracting.

I think that is something you will have to revisit every time you clean the nozzle or change nozzle size.

[reble 3]

58 minutes ago, GregValiant said:

Taking out the nozzle and putting it back in may have changed it's height relative to the "trip point" of the ABL sensor.  A quarter turn is .25mm and that can make enough of a height difference that it affects bed adhesion.

Try adjusting the Z offset in the printer to move the print head down closer to the bed.  Try 0.1mm at a time.  I don't have an ABL so I don't know if you will be adding or subtracting.

I think that is something you will have to revisit every time you clean the nozzle or change nozzle size.

Thanks for the info. I did manually move the Z screw rod up in-order to make it easer to unscrew the nozzle so I could clear the nozzle. I guess I didn't screw the Z rod for the nozzle down far enough. Though I don't know how to tell when I hit the limit switch.  I am still learning the whole process of 3D printing.

Edited April 17, 2022 by reble