New Nozzle-New Ooze

I had an incident that clogged my nozzle so I replaced it. Same Diameter, same brand: .25mm Makergear.

But now I am getting horrible ooze problems after an extrusion, way more than ever before.

What could cause this?


-Nick

Did they change their thermistor by any chance? The heater might also have a different resistor or the heat capacity might have changed. Perhaps you need to tune the PID parameters for the extruder if you're using Marlin.

Its the same thermistor, but it could theoretically be attached differently... Perhaps I should print cooler.

How does one tune a PID, Ive never done it before.

I also recently noticed my hobbed bolt is bent ~5 Degrees [How'd that happen?], so I don't know if/how that could cause ooze, but its not too important, because i plan to switch to a dual bowden soon.

-Nick

Issue command M303 which defaults to tuning at 150 which is probably fine. Or you can do M303 :TEMP to tune to some other temperature in celsius. It'll do a few heating and cooling cycles and spit out some numbers that you can update your configuration.h with.

Ok, ive tried a bunch o' different temperatures and im still getting ooze. Ive upped my retract, occasionally added Z lift during retract, but its still oozing bad... And its the EXACT same setup as before I changed the nozzle, and the new nozzle is the same kind with the same opening. What is going on?!?

I attached a picture of my most recent print to show how it looks, This one was slightly cooler than normal, 180 rather than 185. [185 looks similar].


-Nick

I do have a part i need to make on a deadline, so I would greatly appreciate any help on this.

-Nick