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Suddenly stringing/blobbing

by Cretemonkey

I have been printing 6 sided dice sets with ABS for about a year and suddenly, after a break of about a month, I started getting bad stringing between the dice. I have a Printrbot Simple Metal with a Ubis 13S hot end using Cura 15.04 and 75% infill. The following is what I've done to try and correct the problem.

  • print speed is 50mm/s
  • print with brand new filament
  • reduce temp down to 220
  • raise temp up to 240
  • increase retraction speed to 90mm/s
  • decrease retraction min extrude length to 0.5mm
  • increase travel speed to 200mm/s
  • triple check filament diameter (I even increased and decreased by up to 2mm anyway just to see what it would do)
  • decrease flow rate to 90% (any lower and there are gaps in the die)
  • print with fan on at 0.5mm
  • print with fan off

I may have fiddled with other things but I've been messing with it for a few months and may have forgotten something. In the end I've reduced the stringing but the blobs are still pretty bad and it takes a lot of finishing work to fix the print. Any thoughts or suggestions are very welcome even if I may have tried it you may have a better combination of actions. Thanks!

Blob Stringing
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Prints not centered on bed

by schmots

When ever I do a G29 either by hand or in my start gcode the printer seems to think center of the bed is 10-20mms to the right and about half that back. Anyone else have this issue?

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Where do I buy nozzles?

by rnelias

Is there any other places, besides Printrbot's site, to get nozzles for my Metal?

Shipping costs from printrbot to my country are riculously high and most of the nozzles I find on eBay are male threaded...

My extruder is the old ceramic one (not the new Ubis)

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Pausing a print in CURA

by Gondee

Does anyone have any working knowledge of how to pause and resume a print in CURA. I see the plugin pause at Z, but it doesn't seem to do anything. I would like to do this for the purposes of changing filament colors mid print.

Thanks!

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power supply and printer not functional after power outage

by PLAparts

I was printing a 13 hour job on my printerbot simple metal with the extended heated bead but a power outage in the area canceled it mid prin. at first the power supply did work on its own but when I pluged it into the printer it seemed to shut off the power supply, now the power supply is not turing on even when I switch outlets in the room and in diffrent rooms. I have been reading up on it and it seems that the main curcut may be fried, or it could be the power supply? (no computer or any other deviece was pluged in, I also checked the wires on the board and their where none overlaping making a short curcit) whats happeneing and how do I fix it? I would love any feed back and suggestions if you have experinced this or somthing like this.

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