I did it! The project that I've had in my head for the past seven years is finally done.
It's a drawer for the computer desk I made seven years ago. It doesn't slide too well but I think once the nuts grind against the wood long enough to carve grooves for themselves after repeated openings and closings, it will be much better.
Yes, yes, I know, it's far from perfect and I could get one that slides like butter off a bald monkey at any store, but there's a certain satisfaction that comes from having made something with my own two hands.