Hi, yet another v6 jamming thread So I'm running an e3d V6 hotend, with an i3 Rework. The firmware is calibrated to the best of my ability to the point my 5mm calibration steps are beautiful. I'm running into an issue where the hotend resistance trying to feed the filament increases to the point that it can't feed and it will generally chew up the filament. However, if I just let it go it will stutter for about 2-4 layers and then just continue like normal. I get the end result of this: http://imgur.com/a/rB3sq . The prints ARE infact sticking to the bed. I suspect it is my e3d V6 but can't figure out how to actually resolve the issue. At 240C, this makemendel filament is NOT happy. List of things I've tried: -"Seasoning" the hotend with oil -Low/Medium/High extrusion temperatures (This provides the best results above 230C) -Makerbot filament, Makemendel filament, Microcenter branded filament, ABS. -Low/medium/high extruder tension -Severely underextruding to reduce pressure -dual fans on the v6 hotend heatsink for extra cooling -reduced v6 heatsink cooling -Cooling on the nozzle itself -With and without the PTFE tubing going into the end. I've verified >5 times to make sure this is as snug as possible and in all the way. -No, 1mm, 2mm, 5mm retract Yes, i have the extruder fan wired up to 12v, yes it is running full time, and yes the thermistor is set properly in firmware and providing the same readings as my fluke. I have considered the pressure from my bed level, and tried far/near the bed in a ton of combinations but this even occurs when it's just blindly extruding 30mm above the bed. My prints are sticking to the bed quite well and the first few layers are absolutely beautiful. All of these filaments extrude beautifully from my Printrbot Simple. Feeding them through by hand has similar results to extruding... it feeds for a short time then needs an extra push to continue. I'm 100% out of idea from my google searches and my friends. Anyone else got anything? Here's a picture of the calibration steps I printed: http://i.imgur.com/b2ycvph.jpg They look GREAT until the nozzle says no. It needs a small push on the filament and then it successfully extrudes again. This happens regardless of mechanical extrusion or manually forcing the filament. edit: Just started another print with some Makerbot filament as it likes the temperatures the best. It made it to layer 13, just stopped extruding for a short time and is extruding again at layer 15 like nothing happened. UGH.