Anet A8 leveling thumb wheels

update 6/6/2017- removed the anet springs and installed dual thumbwheels,
To do so you need to have 4 m3 nuts to attached the flat head screws to the top plate and then you have to drill out the threads on the y-axis carriage. I combined it with my bed extender clips (https://www.thingiverse.com/thing:2358703) and setting the four corners is now a breeze.

More inspired by than a remix of these thumb wheels. I like the idea of using thumb wheels to eliminate the springs in the corners.
P