I clean the nozzle before after and pause clean the nozzle on longer prints
Skip to main content
What’s about fans? Are they working properly?
Can you confirm that you are removing the oozed approximate 10mm length of filament 1 or 2 seconds prior to print?
From turning the machine on just getting the machine up to temperature will cause the nozzle to ooze. and if you calibrate prior to printing (I calibrate every time as a matter of process control) as expensive as this machine may seem from a hobbyists perspective, it is still deemed a cheap machine. I still think from an engineers perspective this machine is incredible. I researched machines for six months before buying and have not looked back with regret.
Yes i clean the nozzle just a sec before it starts the print before the autocalibration starts.
i also be happy with the machine this issue is new never had this before.
Do you have burning problems with all abs? or just one particular ABS Colour/reel of filament?
just to emphasise the exact part of the process you must remove is before print as the hotend must heat up again after calibration and it is this exact point of the process that the ooze is at its largest (from my observations)
One thing that you could try is making sure the thermocouple is indeed secured correctly or indeed measuring the correct temperature. I have built a relationship with my machine over the months I have owned it. the more I know about the machine the better the prints become.
If anyone has some pointers on zit reduction on nozzle strike I would love to hear it. (only happens on multiple parts)
I scrape off the nozzle before every print… Very often the black,melted remains on the nozzle aré the causes for this…
Just print everything in black and you’ll be fine.
I find that printing with white Z-ABS always require a certain amount of babysitting.
1.) Check the print every once in a while to make sure there is no carbon build up outside the nozzle.
2.) If the nozzle seems black on the tip, push the knob down until the print pauses (takes a few seconds)
3.) Use tweezers to pull off the string from the part where the nozzle paused. Be cautious not to shift the print around.
3.) Wipe the nozzle gently with some aluminum foil (gently!) until it is clean
4.) Resume the print.
Edit: I think this applies to any light colored filament. The nozzle needs wiping every once in a while. I wipe mine before and after every print, sometimes during prints if the nozzle gets black. There is a high risk that the black carbon “scab” will fall off and embed itself in your print.
for removing the goop on the outside of the nozzle I find using a small wire brush works very nicely. Just make sure you don’t rip up any Kapton or other high temp tape that maybe insulating your heat block. That said cleaning before the start of a print really helps prevent that stuff from building up. If you notice excessive buildup you can also try pausing the print and wiping the nozzle off (VERY CAREFULLY) with a *COTTON* (no synthetics here!) rag. Just be careful since the nozzle is obviously VERY hot and will burn you!
you could try raising the temp of the nozzle(by 5°c step till burns stops), by getting hotter the filament gets more fluid, and that prevent it to attach and burn…it sounds odd for a burned spots to rais temp, but it works…conter-intuitively ))