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Good luck!
Which slicer software are you using?

That sounds stange. I never use the raft feature, no matter of platstic, (ABS, PLA, Ninjaflex, Nylon, Pet).

If the temperature and print speed is the same for raft/no raft and the buildplate is...

Hi!

Looks like you are extruding way too much plastic.
Have you calibrated your extruder? You should do this by calculating steps/mm filament for your specific extruder. You then set the...

I had exactly the same problem. All of a sudden I got shifted layers on my delta printer, all in the same direction (for me it was towards the z-tower). I tried to tighten belts, lower/higher stepper...

I don't think you can take the J-Head Mk IV-B apart. The methods that worked for me when I had serious clogging in that specific hotend was the "atomic" method ...