[Rhodes22-list] Bow Chocks

[Jim Connolly]

If I recall correctly, Don Casey recommends using a countersink bit to widen the screw hole at the top. The stated purpose is to make room for a washer-like tapered ring of sealant around the screw for better adhesion and more flexibility to improve long-term seal around the screw.  The deck fitting is not itself countersunk, but sits on the surface.

Jim Connolly
 s/v Inisheer
'85 recycled '03



Sent from my Verizon Wireless 4G LTE DROID

R22RumRunner at aol.com wrote:

>Dennis,
>I now understand what you are saying, but I will have to disagree with this 
> method. Carving out a hole in the gel coat for the hardware to sit in is a 
>lot  of work and one small slip with a drill or a router will damage the 
>gel coat.  Someone has over engineered this and needs to find a better hobby 
>to occupy  their time. I don't see any benefit to this method, non at all.
> 
>Rummy
> 
> 
>In a message dated 4/8/2013 4:10:20 P.M. Eastern Daylight Time,  
>mcneelyd at site-solutions.com writes:
>
>Hi Rummy  - 
>
>The countersink is for the bedding compound, not the screw head. It  allows
>minor (thermal) movement of the boat, screw, and hardware without  stressing
>the bedding compound or the fiberglass where the screw leaves the  hardware
>and enters the fiberglass. 
>
>Dennis  
>
>www.great-loop.us
>s/v Magic Moments
>berthed in Gibraltar,  Michigan
>
>
>-----Original Message-----
>From:  rhodes22-list-bounces at rhodes22.org
>[mailto:rhodes22-list-bounces at rhodes22.org]  On Behalf Of
>R22RumRunner at aol.com
>Sent: Monday, April 08, 2013 2:00  PM
>To: rhodes22-list at rhodes22.org
>Subject: Re: [Rhodes22-list] Bow  Chocks
>
>Countersink what screw holes? The screws you use will be  determined by the
>hardware you choose. It would be nice if the chocks had a  countersunk hole
>in  them to hide the screw head, but you can't hide  the head in the fibe
>rglass since  the chock is sitting on top of it.  Drill a small pilot hole
>through the gel coat  and glass. Then drill a  larger hole at slow speed so
>you won't heat up the gel  coat and cause  it to crack. I've known some
>people that like to put masking tape   where they are going to drill. It
>never helped me. 
>Fill the holes with  a  good bedding compound and install the chock and
>screws. Ta Dah!  It's not rocket  science, just good  craftsmanship.
>
>Rummy
>
>
>->  snipped
>
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