[Public-list] Plywood Hatch Cover

[Hugh McCormack]

Good morning Bob,

What you could do is build one out of three layers of good quality 1/4" 
cabinet plywood that are laminated together over a frame built to the 
curvature of the original.  1/4" ply is flexible enough for you to do this.  
I would suggest building the new hatch 2" over size in length and width and 
then cutting it to finished size with a bandsaw once the glue has cured.  
This will ensure that you will have clean and perpendicular edges (you won't 
if you just bend over exact size pieces).

If you cut several pieces of 1 X 6 in half along a line matching the profile 
of the hatch you can build a top and bottom clamping frame that would 
sandwich the ply layers in between.  This will also support the hatch as you 
run it through the bandsaw.

Hope this is understandable.

Cheers,

Hugh McCormack
Woody Point, Nfld


>From: Robert Kirk <isobar at bcpl.net>
>Reply-To: Alberg 30 Public List -- open to all 
><public-list at lists.alberg30.org>
>To: Alberg 30 Public List <public-list at lists.alberg30.org>
>Subject: [Public-list] Plywood Hatch Cover
>Date: Sun, 20 May 2007 18:18:32 -0400
>
>The sliding companionway hatch cover on Isobar is a piece of gently curved
>plywood with wooden endpieces. I had to build one new endpiece this year
>and repair the other one. That’s OK, but what happens if the main plywood
>top goes?
>
>It’s ¾ inch good Baltic plywood that has been curved to match the curve of
>the coachtop. If I ever have to replace it, how do I bend  ¾ plywood? Did
>Whitby originally steam them? Can it be done? I suppose I could always make
>it flat and raise the sides using filler pieces.
>
>Bob Kirk
>Isobar #181
>
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