Nanners' Blog My rantings

2Apr/130

Thing-O-Matic Calibration III

My printer has been pumping out some good quality prints in both ABS and PLA for the last week or two.  I've upgraded to linear bearings and a ball bearing follower on my x axis, a mk8 nozzle, and rigged a fan to blow on my extruder stepper, and my filament gap.  With this setup I've been printing both high quality ABS prints, and even gotten off a few hour or longer prints in PLA.  I was having some heating issues on Sunday night were the temperature seemed a bit low during a print, soon into a PLA print my safety cutoff board's light went out and it caused the heater to turn off.  Upon restarting my machine the light comes on and all connections on the board are secure.  As soon as I try to heat up the head(as soon as voltage is sent to the board) the  green light goes out, given this I assume it's not a loose cable on the main boards end, but rather a blown component.  I suspect the relay, the big 2w resistor, or the power rectifier are either shorted or blown, so I've ordered replacements for all of them.   This will end up leading to more general maintenance on my bot: installing linear bearings to replace bushings, greasing the rods, checking all the screws to make sure they are tight ,and re-wrapping the extruder.

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