dpb wrote:
On 04/11/2016 9:07 AM, dadiOH wrote:
...

Which means that you have to get the bottom fully into the grooves. Or,
at least, far enough to remove the "belly". Once there, a
couple of screws through the bottom into the sides should take care
of it.

The length of the arc for a 1/2" sag in the center for a chord length
of 36" is 36.0185" -- thus the movement on either end of the bottom
is only about 0.01". Not significant. There's no chance you can
prevent that kind of movement in wood w/ a mechanical fastener from the
side
(besides the damage done to the piece in trying to do that).

No, not from the side, through the side and bottom from the bottom of the
side; i,e, vertically, not horizontally.