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banooch

Buildup by nozzle- SOLVED

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Posted · Buildup by nozzle- SOLVED

I have a bunch of PLA that has built-up in the housing next to the nozzle. I'm not really sure when or how this happened. Could there be a hole in the nozzle?

 

Anyone know how to get this out? I can print right now, but I'm not sure if it's creating an extrusion problem.

 

Banooch

PLA Buildup

 

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Posted · Buildup by nozzle- SOLVED

It could have been a collision or an earlier failed print or maybe the nozzle leaks a little around the threads. Anyway, simply remove the fan shroud (2 screws each side) and let that hang by the wires and then heat up the nozzle to around 100C for at least 30 seconds and then remove excess with pliers or something.

If it continues to leak you should figure out where exactly it leaks and then consider fixing it. As long as it doesn't drip on your part that you are printing it won't harm anything.

 

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Posted · Buildup by nozzle- SOLVED

Forgot to update this thread. I dismantled the entire fan shroud. The PLA was entirely caked on over just about everything. It took a while to heat up and scrape everything away, having to do it with a flathead screwdriver so I didn't burn myself. There is still some PLA in some nooks and crannies, but most everything is out.

Anyway, the UM2 is working so much better now and that area has not gotten filled with plastic again. It was definitely affecting my prints before I cleaned the area out. I suspect that the bowden tube had come off from the nozzle at one point and PLA leaked through somehow.

Now off to fix my extrusion problems with iRobertl's fixes. Printer has been working great except for these issues.

 

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