The Hardest Working Servo on your 3D Printer - The Extruder Servo

This servo is active all the time... Well really when you think about it all the servos are on all the time even when they are not moving, they are maintaining their position.  But the extruder servo is doing the most jagged oscillating movement (back and forward a lot and fast).  X and X servos being the next most active and then there are the Z servos that really don't do much.

I am bringing that all up because you really need to pay attention to the Extruder servo.  Depending on the controller board you are using the MOSFET could get VERY hot.  When I had a problem I was using the Melzi 2.0 controller that comes with the Tronxy X3.  It's inability to deal with heat in general, this includes the bed heater MOSFET.  You really need to add some sort of extra cooling for the controller.  Those tiny heatsinks that come with the stock Tronxy X3 suck hard.

Megreth

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