Wombot Exilis extruder carriage (no sensor mount)

This is a remix of the original Wombot Exilis extruder carriage without the mount for the auto bed level sensor.
Use this if you manually level the bed and don't need the sensor or as I have done, installed another type of height sensor. I wanted to try a different sensor and chose this one http://aus3d.com.au/ir-z-probe It uses modulated infra-red LEDs to accurately detect proximity to the print surface. being modulated it makes it far less susceptible to other light sources interfering.
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