: Hi Doug,

: My 2 cents [a bit late maybe :-)]. I drew the patterns on one piece of ply
: (inside, outside and coaming lip lines) and srewed 3 pieces of ply
: together. Then cut the outer coaming lip, then inner cutout. Took off the
: bottom piece of ply 9so I had 2 still screwed together) then cut the outer
: ring (i.e. cut off the coaming lip on these 2 bits, down to the smaller
: outside dimension).

: I cut out with a jigsaw, then screwed the three back together and sanded the
: inside with asanding drum attachment on my power drill (you can usually
: get sets of different sized drums from tool shops, just slip on sandpaper
: sleeve and chuck in drill, you have a spindle sander).

: Outsides I sanded with a detail sander (small random orbital one) and they
: all came out neat and the same size. You can use the sanders to round over
: the coaming edges too.

: Hope this helps (and the explanation makes sense).

: Regards,
: Darren

Hi Darren,

That's how I did it the first time too, well added a hand held belt sander that I had, speeds it up but hard to control on edges of plywood.

Bill H.