The speed and temperature should be as below. It should be the defaults of Cura on 'High Quality Print' using PLA.
print_speed = 50
print_temperature = 210
Should I switch to a lower speed and temperature and any recommended speed+temp pairs to ensure quality printing with PLA? Also, should I constantly check the print head temperature in PrintRun throughout the printing?
I will double check the tightness of the all pulleys and tension of all belts. Attached below is the Yoda bust object side-by-side with my printed one. The part circled in blue seems disappeared and in fact the printed layers are deflected to the right of the printed bust, causing the part circled in red to be more than enough.
I recalled below issues during the printing of the bust after around 30 minutes of printing. I wonder if these two issues have caused the decline in printing quality in prolonged printing. An ABS Fix Kit was included in my Ultimaker kit but I was advised to skip using it and now I am considering to extrude the ABS to fix the below leakages. One question is how can I remove the accumulated PLA (esp those in b)) and proceed with the ABS extrusion?
a) brown sludge started to formed around the gap between the nozzle and the aluminum heater block as circled red in below photo. This sludge slipped down the nozzle, touched down on the printed surface and pushed aside by the moving nozzle.
b) melted PLA accumulated around the gap between the aluminum heater block and the peek insulator as circled blue in below photo. The longer the printing the more PLA is accumulated.