Nothing but problems on SE

This is a new printer. I had it printing fine using 10 year old hatchbox PLA. All of a sudden the the X axis got lost. Got a new board and installed it and that was fixed.

After this nothing but errors. Got new PLA (Soleyin) and tried printing. Nothing but clogs. The PLA would stop coming out and jam inside. Changed the nozzle and tore apart the extruder to clear the jam of filament.

Eventually a nozzle broke off in the hot end. Got a new hot end and replaced that. Right now nothing prints. I get a smear of filament on the build plate and the gear starts turning but filament stops feeding. Been playing around with the tension adjustment screw but nothing is working. Tried printing temps of 190-220 and still same.

Just for Grins i got a new PLA today from Sunlu. Same thing happens.

I am not new to 3D printing but I am new to this printer. My onld one was a monoprice ultimate that finally stopped printing. At a loss on what to do next.

I just took some temp readings on the hotend and nozzle. Printer shows 215c. Laser thermometer shows 80c. nozzle shows 55c. Same thermometer reads 62C on the bed set at 60c. Did I get a bad hotend?

Hi,

Its possible!

It depends where you are measuring the temperature. I would do a manual extrude (assuming it’s the same as a KE). If the manual extrude works well then it’s unlikely to be a temp cal issue. If it doesn’t try turning the temperature up to 300 (or whatever max is) if the extrude then works then it really must be a temp offset.

Extrude works. I used a fast read thermometer and the hot end was showing 215c. Its like the .4mm nozzle is not big enough now. At a loss.

This sounds odd. When you do the manual extrude at around 215c you get a nice clean extrusion?

If so I’m wondering if the z axis is too close to the build plate? can you check the offset and perhaps measure - or just increase it by 0.2 and see if it changes/improves?

I have been trying. Working on it again today. I agree z offset but have not been able to find the spot. There are multiple ways i have tried. Using a sheet of paper and just to the point of resistance

I may have found the clogging issue. Should there be a small piece of tubing in the hotend? I saw removing my third clog of the day when that came out.

Now i found the problem. My hot end fan is not working. The filament is melting up too high

Update after much struggle i am working. The problem was the hot end fan was blowing the wrong direction. It should be blowing toward the hotend.