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chopperx

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  1. Thanks, that makes sense. What kind of layer height would be appropriate for the 0.8 nozzle? Believe it or not, it has been throwing up both errors, that’s why I thought it so weird, given that it prints perfectly with the 0.4 nozzle/0.1 layer height.
  2. Apologies if this has been asked and answered, I couldn’t find anything similar on here. I’m using an Ultimaker 2, Olsson Block installed and up to date Cura version. I’ve always printed with the default 0.4 nozzle with a 0.1 layer height. I decided to have a try with the 0.8 nozzle and set the layer height to 0.3, leaving the other settings as they were. Every time i’ve tried to print, I get the first layer down then it freezes with a heater error or temp sensor error. I’ve stripped the print head down twice and am sure everything is connected as it should be. I swapped the nozzle back to a 0
  3. Thanks guys, yes I traced it back and indeed it was the other end of the cable. Put it back together and it's working perfectly now. Thanks for the assist!
  4. hi, I've been spending this afternoon freshening up my UM2, replacing Bowden tube, coupler,heater cartridge and temp. sensor (and cursing the sadistic designer!) Got everything done ok but I appear to have dislodged a connector from the board, a orange and brown wired one. There appears to be an identical unattached connector about halfway up the sleeve to the head. I haven't pulled at it for fear of disconnecting something else. Can anybody advise where they should go?
  5. Thanks for all the help guys. I'm using colorfabb stuff so hopefully that won't be the problem. It's actually printing quite well now, not perfect but acceptable after I did the workaround. I'm pretty much convinced that it's the coupler so next time the issue comes up, and there's always a next time, I'll replace it as a spare hot end pack came with the machine. Thanks again guys, it's a great community here.
  6. Hi guys, I thought that I had been pretty fortunate in not having major issues with the UM2 after using it for the last 4 or 5 months. Unfortunately i'm encountering a strange and persistent underextrusion problem. I started getting really bad prints about a month ago. It would print either really badly or sometimes just part print. It is no fun coming back to it 6 hours into a 10 hour print to find it happily whizzing away in mid air with nothing coming out! After reading some very helpful advice on here I increased the nozzle temp. to 230 and, sure enough, I went back to having pretty good p
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