Solidoodle well nut anti-backlash (aluminium platform)

A simple retainer plate for a $2 well nut. You can use the existing holes on the platform, you don't need to drill or thread anything -- this was the simplest approach I could find/think. Also, the rubber should act as a spring, which is nice (I guess).

I have one of the new aluminium platforms, so previous fixes needed modification. Credit for this approach (which was the simplest I found) goes to http://www.soliforum.com/topic/2341/poor-mans-antibacklash-nut-no-assembly-required/, but the new platform has nothing there to jam the nut against, so I made this retainer plate.

Backlash on the new platform was minimal, but it was there. This seems to eliminate it nicely. We'll see how well the rubber holds over time (but for $2... who cares :).

Update 11/9/13 Added observations, after about six months of use, into instructions.