Perspex Washboard design

For what it's worth, mine are 12mm polycarbonate. They feel solid rather than heavy - anyone who had difficulty handling them wouldn't be fit to sail the boat anyway.

Pete
 
Mine are ( is ) 12mm it is 425 mm wide at the top and 375mm wide at the bottom and 600mm high.

It is far, far too heavy in one piece. Must weigh 5kg plus. In the rain or spray wet acrylic is as slick as ice and a washboard does not have a great handle on it. Dropping it on a toe or finger would have you in serious trouble. I'm going to have it cut through at about 30 degrees into two pieces.
 
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