Jam or filament stripping, not sure which causes which

[gr5 2,167]

WTF is going on with the red mess that's clamping the cold end

 

lol. Illuminarti we aren't all as mechanically brilliant as you are. Give the guy a break.

 

blowing cold air all over the nozzle

 

I would definitely think this is a problem. Maybe print this one instead which I beleive is as close to stock as possible and is what Daid uses, or use the original and repair it with kapton tape:

http://www.thingiverse.com/thing:17602

 

[illuminarti 18]

Well, I'm definitely not brilliant... but at least my printer works :-p

 

lol. Illuminarti we aren't all as mechanically brilliant as you are. Give the guy a break.

 

[holoped 0]

I cleaned the nozzle one final time, got new PLA filament, and installed a fan to cool the PEEK part of the hotend.

Now it works flawlessly.

Thanks everyone for your help.

 

[italianmaxx 0]

hi, seems to have the same problem. before switching to v2, can you show how you keep the peek cooled and why this helps? thanks!

 

[gr5 2,167]

He has a fan aimed at the print head instead of at the print bed. For some people, especially with V1 print head design, heat slowly goes up the print head. Especially if you have lots of retraction that pulls the heat up allowing warmer filament to touch the inside walls. Then eventually it gets hot enough to soften the PLA and you get upper-print-head clogs.

Usually the clogs happen only after a long time. For example after 5 hours of printing.