Priming line looks perfect, print fails.

[vapid mirage]

BUILD: Ender3 basic model with SKR pro v1.2 motherboard, TMC2209 steppers, noctua hotend fan, glass bed, low resistance Bowden tube, 0.4 nozzle, and using fresh black PLA.

SETTINGS: 200 hotend, 60 bed, 0.12 layer height, 22 intial layer speed.

CONTEXT: I’ve always had issues with this printer since the z stop came loose and the nozzle slammed into the bed. Been making do since then but now I can’t get layer 1 down. Every time, the priming line comes out perfect, but the actual print is a thin stringy mess.

[open valley]

AI Help

It sounds like you may be experiencing issues with the first layer adhesion and filament flow. Here are some troubleshooting steps you can try:

1. Make sure your bed is leveled properly. Check all corners and the center of the bed to ensure the nozzle is at the correct distance from the bed for proper adhesion.

2. Check the nozzle height. Ensure that the nozzle is not too close to the bed as this can cause the filament to not extrude properly.

3. Increase the initial layer speed to ensure better adhesion. Try increasing it to around 30-40 mm/s to see if it improves the first layer quality.

4. Check the temperature settings for your filament. PLA usually prints well at 200 degrees Celsius, but you can also try increasing the temperature slightly to improve flow.

5. Check the extruder for any clogs or issues with filament feeding. Make sure the Bowden tube is properly seated and there are no obstructions in the hotend.

6. Clean the build surface with isopropyl alcohol to ensure ...

WARNING: This response is AI generated and may contain errors.

[wise sail]

Did the z stop move?

[vapid mirage]

Popped off if I remember correctly. Ive taken it off/on a good few times since then. Stop itself works fine now.

[wise sail]

but is it aligined, if its not then it might be stoping to late and your mesh could be angled so then the purge line is fine but the bed itself is not

[vapid mirage]

I got it “close enough” then used the bed leveling wheels for the rest. So it is currently aligned. Though the glass plate is bowed in the middle AND the right leveling springs are far more compressed than the left. (I assume the left side build plate is bent downwards from the impact)

[wise sail]

Hmm have you made a firmware changes recently?

[vapid mirage]

Replaced the whole board so yeah, had to. Running newest version of marlin on the SKR

[wise sail]

Is the z offset saving?

Might be the firmware changes

[vapid mirage]

I’ve done several homing passes between power cycles. Always brings it to the same spot where I manually leveled with the paper.

[wise sail]

I had that issue for a while when I got a bl touch and it was firmware

[vapid mirage]

Gotta print a BL touch mount to solve the printing issue lol.

[wise sail]

Is bl touch enabled rn?

[vapid mirage]

My intuition is telling me it’s a combination of a few things currently. Old wheels, warped y plate, and warped glass. Lots of low/high spots

[wise sail]

Have you tried print in the corner

[vapid mirage]

Shouldn’t be. Didn’t get one, since I can’t even print a mount for it

[wise sail]

Since the center is not perfectly level you can try a corner

[vapid mirage]

The print is something that takes up a majority of the surface. Though I suppose I could print a bunch of squares all over the glass and see which ones fail