Ormerod z axis upgrade

In the pursuit of a better alternative to the M5 lead screw i saw that acme lead screws have come down in price due to higher demand. After figuring out how to implement this upgrade i came up with this design.

This upgrade requires three printed parts and a structural modification of your printer which _will_ force you to recalibrate your printer.

--PLEASE NOTE--
The screws holding the IR probe will come loose over repeated homing of the X axis IF YOU DO NOT LOWER THE X AXIS HOMING SPEED