Not my idea.
http://forums.linn.co.uk/bb/archive/index.php/thread-5731-3.html
"skiffle0
2010-02-08, 20:30
(2010-02-06 16:43)vicdiaz Wrote: [ -> ]Pics of reinforced hinges would be good idea!
I have changed my plan.
Instead of sticking a plate to the outside (too messy), I cut thin zinc sheet in to 16mm(width) x 17mm (depth) rectangles (one for each hinge).
The sheet can then be inserted in to the inside of the spring casing. I hope that this will spread the force acting on the polymer casing.
I have thought of marketing it as the "klunk". advantages seem to be a lack of transient "thwack", as the lid hits the plinth, and inky black silences between lid movements.
Only problem is, that someone will possibly market a "klunk klone" at a tenth of the price, and dispute my measurements!#
best wishes, Guy."