I just finished as set of vertical companionway hatch boards. These are two piece dark bronze plexiglass (1/4 inch) with bamboo stiffeners
I made a lock bracket that fits over the top panel
I made a second set for the reduced width companionway as a result of the air conditioner vent assembly
Plexi vs lexan is a tradeoff. Strength, scratch resistance, general durability all to be considered. Plexi is available in a wide variety of colors. I found a good deal online where I could by 12 inch wide pieces - three at three feet long, one at two feet long. I believe the angle to cut is about 6.5 degrees. I ripped the pieces a bit under 12 inches equally to match the stock cover (leaves a gap at top). Plexi was easy to cut on the table saw (rip) and with a Rockwell Versacut (angles) with the carbide blade. Finished shaping with sanders.
I cut bamboo flooring to 1 inch by 3/8 inch and sandwiched inside and out - fastened with 6x3/4 inch screws.
Last edited by RobertB on Thu Aug 21, 2014 4:33 am, edited 1 time in total.