Luke11CNC Build Log ,I'm so naïve

[Jonathan]

Well It wouldn't be acceptable to me ... on any machine with my name to it.!!

Same

Oh you might want to checkout how proper double nuts are connected and preloaded.? Dont think you'll find meny springs around.?

I know, but proper double nuts aren't as good as two nuts and springs / belville washers are they.
When I referred to 'double nuts and a spring' earlier I was thinking of doing something like this as it's a simple way of implementing it:

http://www.mycncuk.com/forums/showth...ull=1#post8924

Especially with only C7 grade screws where the pitch error limits how far you can go with double nuts.