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E3D Volcano Hot End

Shawn Fitzpatrick

December 01, 2016 00:45

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Anyone testing the E3D Volcano Hot Ends on a Gigabot of any kind, OBG, or otherwise?

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6 comments

• 0
  
  Matthew Fiedler December 01, 2016 17:15

  I have been testing a re:inspired version of the volcano hot end with 0.8mm nozzle using these Simplify3D settings:

   

  http://wiki.re3d.org/index.php?title=Installing_and_using_software_with_Gigabot#Gigabot_configuration

• 1
  
  Jeric Bautista December 06, 2016 15:46

  You can also experiment w/ larger nozzles on your stock hot end. I've seen about a 20%-30% decrease in print times just from this. Even if you maintain "typical" layer heights (0.2223mm, 0.3175mm, etc.) you have the added benefit of a wider extrusion width.

  That being said, this maximum output is the limiting factor, and why a Volcano or Volcano-esque design is necessary to really step up your thick-layer, fast-printing game. If you experiment w/ a Volcano, or a Volcano variant be sure to share your results!

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  Shawn Fitzpatrick December 06, 2016 19:05

  The issue I ran into with the stock hot end and .8 mm nozzles was that it couldn't seem to keep up with the flow rate on that large of a nozzle. Even with bumping the heat up 5ºC it seemed I had to drop the default printing speed from 3600mm/m to 2400mm/m. I am hoping that the volcano will allow me to bump the speed back up to at least 3600mm/m and perhaps even allow a 1.2mm nozzle.

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  Matthew Fiedler December 06, 2016 19:55

  Hi Shawn,

  I have a Simplify3D profile for the volcano style hot end and 0.8mm nozzle here: http://wiki.re3d.org/index.php?title=File:Re3D_GB3%2B_0.8mm_Nozzle.fff 

  With a volcano style hot end, 0.8mm nozzle, and 0.635mm layer height at 240C the max print speed will be around 2700mm/m. You should be able to print faster than 2700 when you reduce the layer height. This will give you about 0.1lb of plastic / hr.

  The limitation is the length of the heated section of the hot end. To flow more plastic you will need a hot end with 1.5 - 2x longer heater block than the volcano.

• 0
  
  Shawn Fitzpatrick December 06, 2016 20:52

  Hi Matthew,

  So are you suggesting we could machine a longer block and use the existing 24 volt x 40 watt heater to increase speed, or would we need to increase the heater wattage as well? Could we put two heaters into the same head perhaps? If so, would that require upgrading the heater wiring and would the board support the extra wattage?

  Thanks,

  Shawn

• 0
  
  Matthew Fiedler December 06, 2016 21:58

  We did machine a heater block having the same length as the volcano and inserted two 40 watt heater cartridges.

  I think the real fix is to make the heater block even longer than the volcano by 1.5 to 2x with a total of 60-80watts of heat.