From: Patrick Pierquet <ppierquet@teltech.com>
To: "'baidarka@lists.intelenet.net'" <baidarka@lists.intelenet.net>
Subject: RE: [baidarka] Gunwale height
Date: Mon, 20 Jul 1998 11:43:43 -0500
Thanks for the info!
> -----Original Message-----
> From: Michael O'Flynn [SMTP:moflynn@sd23.bc.ca]
> Sent: Monday, July 20, 1998 11:03 AM
> To: baidarka@lists.intelenet.net
> Subject: Re: [baidarka] Gunwale height
>
> Hi Patrick.
>
> ABS, as you may already know, is actually Acrylnitrile Butadiene
> Styrene (or
> All Black Stuff, as some of my students are fond of calling it!)
>
> You can get it in any plastic shop, and it comes in white and black.
> You
> can use methylene chloride to glue it together (the fabricator's
> choice --
> for speed), or you can simply use the yellow plumber's ABS solvent
> cement.
> The former has an exciting MSDS, while the latter is probably just bad
> for
> you. For my money, the yellow stuff is cheaper, but much thicker
> (when
> you're trying to stick two pieces together by flooding liquid between
> them).
>
> Putz showed using cardboard to make templates for the wood which would
> become the coaming. I used the cardboard, then transferred that to
> 1/8"
> ABS.
>
> The coaming is simply 1/8" ABS with a top lip created from two pieces
> of
> 1/4" ABS glued together along the top edge. Imagine the letter "P".
> I
> reinforced the corners (it's an old-fashioned coaming, to my mind) by
> using
> small, bent pieces of ABS glued into the corners.
>
> ABS is really easy to work with, as it is tough and not brittle. It
> bends
> well with heat. Perhaps a heat gun would work with it -- I usually
> use an
> oven or a home-made strip heater.
> -----Original Message-----
> From: Patrick Pierquet <ppierquet@teltech.com>
> To: 'baidarka@lists.intelenet.net' <baidarka@lists.intelenet.net>
> Date: Monday, July 20, 1998 8:35 AM
> Subject: RE: [baidarka] Gunwale height
>
>
> >Hi Michael - Can you elaborate on your ABS coaming??? Sounds like
> an
> >interesting alternative!
> >
> >- Patrick Pierquet
> >ppierquet@teltech.com
> >
> >> -----Original Message-----
> >> From: Michael O'Flynn [SMTP:moflynn@sd23.bc.ca]
> >> Sent: Saturday, July 18, 1998 11:30 PM
> >> To: baidarka@lists.intelenet.net
> >> Subject: Re: [baidarka] Gunwale height
> >>
> >> Hi Chris.
> >>
> >> My "Putz style" hit the water this past week with no ill effect.
> >>
> >> It is skinned in 3.7 oz aircraft dacron (Ceconite - it cost $72.00
> >> Canadian
> >> for more than enough to do the whole craft). The dacron was
> >> surprisingly
> >> easy to work with, almost no wrinkles at all, even before
> >> heat-shrinking.
> >> Small puckers at the top longitudinal seam make it look kinda
> >> authentic
> >> (IMHO)
> >>
> >> I coated it with Flecto Outdoor Diamond Finish. The 3.79 litre tin
> >> ('merican gallon) was $60.00, and is enough to do 2 more 'yaks.
> >>
> >> The finish is water-based, and not designed for below the
> waterline,
> >> but I
> >> tested the stuff for several days submerged until I actually used
> it.
> >> I put
> >> on 5 coats (paranoia?), and it went well.
> >>
> >> The only toxicity issue I had is that I made my coaming out of ABS,
> >> and the
> >> solvent cement for it is deadly. I don't think I'll do it that way
> >> again,
> >> although it looks "bought".
> >> -----Original Message-----
> >> From: Chris Kohut <chriskayak@earthlink.net>
> >> To: baidarka@lists.intelenet.net <baidarka@lists.intelenet.net>
> >> Date: Thursday, July 16, 1998 4:50 PM
> >> Subject: Re: [baidarka] Gunwale height
> >>
> >>
> >> >At the risk of inspiring incendiary missives, (INCOMMING!!!!)
> might
> >> I ask,
> >> if
> >> >there are skinning materials such as nylon out there,(which I
> found
> >> to be
> >> >fairly easy to work with), what are the properties and advantages
> of
> >> choosing
> >> >#10 canvas? Or are there better skinning materials than the two
> >> mentioned?
> >> >Or is this part of the great Vanilla/Chocolate debate?
> >> > Chris
> >> >David Baranoski wrote:
> >> >
> >> >> On Thu, 16 Jul 1998, Wolfgang Brinck wrote:
> >> >>
> >> >> > I have built baidarkas using white pine for gunwales (1.75")
> and
> >> none
> >> of
> >> >> > them has broken, but I think white pine is less elastic than
> some
> >> other
> >> >> > woods and in time can take a set or warp more easily than
> stiffer
> >> more
> >> >> > elastic lumber species.
> >> >> >
> >> >> > An extra quarter inch (2" gunwale) should be sufficient since
> >> stiffness
> >> >> > goes up with the cube of the height - if you do the math, you
> >> will find
> >> >> > that adding a quarter inch will increase stiffness by 50%,
> adding
> >> 1/8th
> >> >> > inch will increase stiffness by 22%, so have at it.
> >> >> >
> >> >>
> >> >> Wolfgang,
> >> >>
> >> >> I'll go ahead with using 2 inches for the gunwales. Lake Ontario
> >> can get
> >> >> up there sometimes, and the white pine/stiffness question hit my
> >> paranoia
> >> >> button. I'll sleep better at night now. I think I'll stay away
> from
> >> the
> >> >> archives for a while...just sourced a local supplier of #10
> canvas
> >> duck,
> >> >> and I don't want to see that you've been advocating nylon :)
> >> >>
> >> >> Thanks for the reply; and I'll apologize for getting your book a
> >> little
> >> >> dog-eared.
> >> >>
> >> >> David Baranoski
> >> >> Thorold, Ontario
> >> >> Canada
> >> >
> >> >
> >> >