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Re: S&G: composite coaming/recess: I did it!
By:Shawn Baker
Date: 7/14/2003, 10:08 am

Very sweet!

VCP ain't got nuttin' on your ocean cockpit!!

Shawn

: News on the hybrid qajariaq: I wanted one of those fancy recesses that you
: see 'molded in' on glass boats. I decided to attempt to lay up the recess
: and coaming lip all at once. I did it all in one monumental effort,
: yesterday.

: I have some pictures up at
: http://www.frontiernet.net/~gdmurphy/greenland_coaming.htm but not much
: text. I'll fix up that page soon, it was very late, and I just wanted to
: upload the pictures.

: The steps were: Saw out the deck hole to the desired opening dimension, plus
: the layup thickness. Partially saw the desired recess dimension.

: Determine the lip height. I used the top of the deck as a tool, except at the
: sides, where I built it up about 1/4". Mask with tape.

: Build tool down on underside of deck. I used minicel foam as a tool here.
: Determine the height where the sprayskirt goes; I used 3/4 inches. Surform
: and sand tool to that thickness. Sand bevel at outside, running to deck
: underside. Soften all corners with sandpaper. Mask.

: Lay up 5.8oz carbon twill / E-glass layers/ 5.8oz carbon twill. All was
: precut, on the bias. I used a combination of layers about 50 ounces thick.

: Close the windows and let the attic go to 110 degrees.

: When cured, cut out the partially sawed cut with a razor knife. The
: recess/coaming and the tool comes out as a unit. Sand off all the sharp
: edges so you don't cut yourself. Break out the cedar tooling, pull out all
: the foam and tape.

: Mark, rout, and sand desired lip width. Same for the internal gluing flange.

: Bevel the deck at the recess edge. Glue from the bottom.

: That's all I did so far. I still want to fillet and tape the joint on the
: inside outside, and pretty it up.

: This is not the best picture, but you can just make out the width of the lip
: where the camera flash is reflected. The lip underside is at deck level at
: the front and back, and raised 1/4 inch at the sides.

: Regards,
: DAve

Messages In This Thread

S&G: composite coaming/recess: I did it! *LINK* *Pic*
Dave Murphy -- 7/14/2003, 9:15 am
Re: composite coaming/recess: fixed page *LINK*
Dave Murphy -- 7/27/2003, 10:25 am
Re: composite coaming/recess: fixed page
Shawn Baker -- 7/29/2003, 6:32 pm
Re: composite coaming/recess: fixed page
Dave Murphy -- 7/30/2003, 10:03 am
Re: composite coaming/recess: fixed page
Shawn Baker -- 7/30/2003, 11:16 am
Re: composite coaming/recess: fixed page
Dave Murphy -- 7/30/2003, 11:51 am
Re: Very Slick!! I like it!! *NM*
Steve Frederick -- 7/14/2003, 10:31 pm
Re: S&G: composite coaming/recess: I did it!
Tony W. -- 7/14/2003, 8:13 pm
Re: S&G: composite coaming/recess: I did it!
Dave Murphy -- 7/15/2003, 8:45 am
Re: S&G: composite coaming/recess: I did it!
David Hill -- 7/14/2003, 2:00 pm
Re: S&G: composite coaming/recess: I did it!
mike allen -- 7/14/2003, 12:33 pm
why stop at the coaming?
mike allen -- 7/14/2003, 2:49 pm
Re: why stop at the coaming? *LINK*
Dave Murphy -- 7/14/2003, 3:22 pm
Re: S&G: composite coaming/recess: I did it!
srchr/gerald -- 7/14/2003, 11:09 am
Re: ideas
Dave Murphy -- 7/14/2003, 12:16 pm
Excellent
Sam McFadden -- 7/14/2003, 10:46 am
Re: S&G: composite coaming/recess: I did it!
Shawn Baker -- 7/14/2003, 10:08 am
Re: S&G: composite coaming/recess: I did it!
Dave Murphy -- 7/14/2003, 10:28 am