I fashioned myself a nifty wee table for holding my pint etc. whilst gigging
in the band (I got fed up with the number of pints being kicked over on
stage!). It needed to be strong, rigid and stable, yet fold as flat as
possible to fit in my instrument case with no raised screwheads etc. I
ended up using 3 pieces of 4mm 3-ply wood to make a table 40cm x 26 x 32
(high). Each leg piece has a hinged triangle which folds under the table to
lock the legs in place. The two leg sections fold one over t'other, under
the table to give a flat height of just 17mm! Whoo hoo!

Looks like this:

=========================
| / =====
|! / \ |
| / \ !|
| \ |
| |
| |



=============
| | / |
| |! / |
| | / |
| |
| |
|_____________ |

! = hinge

Problem is, I'd used Araldite glue to attach the metal hinges rather than
screws. Most of the construction seems strong enough and lasted for a few
weeks, but one hinge was taking a bit more load than the others and has come
loose twice.

Is there a better way to secure these hinges without increasing the flat
height?
Is there a better material to use than 4mm 3-ply that's fairly cheap?
Is there a better construct?

Thanks in anticipation

Drew