MK2 Malfunction
First off I have to start by saying how amazing this printer is. It's quiet. It's precise and I love the thing to death. I've had a few super successful prints on it and have been super satisfied. Last night I ran a print before going to bed and, but when I woke up things had gone wrong.
Unfortunatly for me I did not make printing the replacement print head parts before this incident. First off can anyone tell me what they think went wrong? I ran a Slic3r gcode with the default settings for PLA, the print was something similar to a larger raspberry pi case. I have run similar prints and not had an issue. Please let me know if there is anything I can do to prevent this from happening again. Second is there anyplace to get just a few replacement pieces for the head? Other than going to an online printer? Thanks so much.
Re: MK2 Malfunction
Most often this is caused by the print not sticking well enough to the bed. That can be caused by the first layer not being low enough or possible curling on the print that got caught by the hotend or PINDA probe. You should be able to heat the hotend to the PLA temp and carefully remove the nest of filament with some tweezers/pliers. Just remember to be careful not to damage the thermistor cable or burn your fingers.
Re: MK2 Malfunction
Try using a raft. I get great results when I need to with the software I use. Some prints need a raft. Low level bed sensing should be taken care of by the PINDA sensor and the 9 points of probing.
Not all slicers are equal.
In your posted picture all you need to do is heat up the hotend to PLA temp. And remove the excess filament clog with tweezers < an essential tool. The hotened nozzle would be clear and you could print again. Without part replacement . Check your bed levelling to prevent this issue in the future.
This happend because you were printing well above the build plate level. ie printing in air.
Nigel
Life is keeping interested and excited by knowledge and new things.
Re: MK2 Malfunction
The problem is that you didn't post a picture of the part (if there was one) left on the build plate.
This may also have been caused by using Quiet mode, or loose belt pulley screws.
Generally it is best to watch the first few layers to make sure they are laid down properly before leaving the printer. And also make sure you have a smoke alarm in the same room as the printer.
From the E3D web site:
Like all 3D printers, printers fitted with a high temperature all metal hotend can be a fire hazard. You are using experimental technology to heat and melt plastic, in a machine that you may have built or modified yourself, that likely does not have safety certification or significant failsafes. Fire/Smoke alarms, supervision of your printer while printing, and expertise should not be considered optional.
Peter
Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…
Re: MK2 Malfunction
@pjr Peter a good reply from you for a while. Watch the first layers lay down and fit a smoke alarm in the 3D printing room < not any effect if you leave the house in a 48 hour print. I never leave the house running a 3D print. My wife complains so I limit these kind of long prints, and we go out more often for a shopping trip, meal or walk. We need to keep our support ladies happy too 🙂
Nigel
Life is keeping interested and excited by knowledge and new things.