Replicator 1 Cooling Fan
by jer, published
With the latest version, I've been getting very successful PLA prints.
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I don't know off the top of my head. You'll have to look it up. As I said, the tools I use do this automatically.
With the latest Makerbot/Sailfish firmware, it works using the standard gcodes. Your slicer software should give you a fan option. For example, in Skeinforge the cool tab lets you select fan options. When printing PLA, I use the option that turns the fan on at the beginning of the print, and turns it off when complete.
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If you've previously downloaded, please update to the newest version. The latest version lowers the nozzel and focuses the airflow for much better cooling. I've also split the .stl files for easier printing. You'll now need to glue the two pieces together, but you can print without support material.
After installing the nozzle onto the carriage and before attching the cooling fan, I tape over the bolt holes on the inside of the nozzle. This will help keep the nozzle pressure up. I also started using a different fan, one with alot more static pressure.
Connect the cooling fan to the extra FET on the mightyboard. Using the latest Makerbot or Sailfish firmware (7.5 at the time of this writing) the fan can be controlled either by gcode or from the control menus.
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