These are all fine suggestions, some of which I think I have already tried.
Simply getting the hole constrained to the slot has not been a problem.
However, unless I am missing something, these methods would result in the
hole either being stationary or totally unconstrained to move along (and
beyond) the long axis of the slot. I want the hole to be able to move back
and forth along the length of the slot without being able to move past the
ends of the slot. I've about decided that it can't be done, but I am hoping
some ingenious user has solved (read "found yet another required IV
workaround") this problem. BTW, like Teun, I usually mate parts to parts
and add-on the fasteners later.
Thanks,
Blane