Thanks for the quick reply.
The Cura was set to 45mm/s, 230C. Shell thickness 1.2mm, 20% fill. I've had some good prints recently with these settings, if only the damn support structures wasn't so strong!
Are you saying that if I undo the top four bolts then the major part of the print head (nozzle, fans etc) should pull off downwards? and I only need to avoid pulling the Bowden tube down with it?
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IRobertI 521
What print settings are you using? Temp, speed etc.
Sounds like you're going to have to do a bit of mechanical work to get the filament outa there. Time to see what the head looks like when disassembled
Bring the head up to printing temp to keep the PLA soft. Then undo the four big bolts on the head. While holding the bowden tube firmly (to prevent it from moving down) carefully grab the lower part of the head (remember it's hot!) and wiggle it until it comes loose. Once the head is separated it should be easy to get the old filament out of there.
To clean out your nozzle, after having removed the big old pieces of PLA, cut off a piece of fresh PLA and insert it into the head. Now lower the temperature to 70-80C or so, once the head has cooled down to this temperature pull on the filament and hopefully you'll get a nozzle shaped blob of PLA coming out of there. Look through the nozzle to make sure you can see daylight. The nozzle should now be clean and you can re-assemble.
To upload pictures:
Click on the gallery link on the left of your screen, on the new page you click the blue "Upload" button towards the top right. From there just follow the instructions.
Once you've uploaded your images you can start a new post. When writing the post there's a toolbar above the area where you type in your post. Click on the "My media" button and a popup will be shown, click on the "Gallery images" link on the left and your images should show. Click on the ones you want to insert and then click on "Finished".
I know, it's really bloody convoluted... You're not the first one to be confused by it, trust me.
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