Heat the tips and make sure they are screwed in all the way. Some tips are not all the way and mushroom inside causing clogs. Also upgrade arms and get rid of the default maker it assembly.
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Hello Andrew
looks familiar.
I am just taking a wild guess.
You printing environment is a little warmer than usual?
Your enclosed chamber heats up over the time of one print?
The failing layers have much less material than the starting layers?
I guess your filament is warm and soft long before it enters the extruder.
Try without the lamp.
Most important: Try printing with open hood to cool down the chamber.
Your temp is already low, but maybe you need to go lower?
Hi Chris,
That’s a good idea, I was thinking of doing almost the exact same thing, nice video btw. I’ll let you know my results.
Cheers
Andrew
Hi Chanman,
Ok thanks for the advice, you don’t happen to have a picture of what you did do you? I don’t quite understand where the thermal tape is around the extruder.
Cheers
Andrew
I’ll post the results of my testing soon so hopefully we can solve a few more problems.
Cheers
Andrew
Thanks everyone for the responses, I am going to go through and look at everyone’s advice and then run a few experiments. Then I will post the results so that everyone can see what (hopefully) worked.
Cheers
Andrew
I had a similar issue on our reprap, the solution was to slightly increase the printing temperature or slow down your print speed to allow filament time to melt, aswell as increasing retraction length to 5 mm giving the hobbed bolt a little extra filament to work with reducing the amount of chew happening to a particular spot in the filament.
hope this helps!
Nathan @ Protoprynt
SOLVED!
Hey guys, My thermistors (so -called thermocouple) came in and I replaced both of them and still getting print failures. What it turned out to be is where the MotherBoard fan plugs in, or rather where the wires go into the plug. When I jiggled/pushed/pulled on the wires and plug I could get the MB fan to stop. I just had to strip the insulation back on both wires and tighten them both down. While I was in there I added a fan on the right side panel blowing in over the motherboard. Hope I am not premature as my first print is only 47% done at this point but I THINK it’s fixed!
Update: PROBLEM SOLVED… see above text.
Ran a 2hr 15min print perfectly!
Hi Drydock,
Was every single of your prints failing before you replaced the thermocouples and tightened the wires? I was getting sporadic failures only, could you let me know if you have any failures after you have printed a few more objects? (just to confirm this fixed it)
Cheers
Andrew
Ok thanks Nathan, I’ll have a play around and get back to you.
Cheers
Andrew
Andrew, here is a link to show how to replace the thermal tape, in the file there is a view of the print head from underneath, the nozzle is surrounded by kapton tape, this is the thermal tape. You can purchase this from Amazon etc.