[C320-list] 3M 4200 fast cure

[Warren Updike]

Ahhh, unless newer boats were done differently (and I doubt it,) the bolts
in the chain plates do not carry the load from the shrouds to the rods
inside that are attached to the liner.  The load is carried by the plate the
shroud is attached to and the other end of the plate is attached to the rod
inside.  The bolts only hold the facing cover on the deck and inside
together.  The bedding is to seal the plate as it passes through the deck.
If you fill the deck opening with a flexible, adhesive material to the level
of the deck, then probably butyl tape can be used to bed the cover to the
deck.  I don't see how butyl tape can be used to bed the thru-deck plate.  
I could be wrong, I was once in 1962, so if I am, please, someone correct
me.

Warren & Pattie Updike
1994 C320 #62 "Warr De Mar"

-----Original Message-----
From: Jon Vez [mailto:jonvez at comcast.net] 
Sent: Monday, June 24, 2013 12:36 PM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] 3M 4200 fast cure

Jim,

You are correct. The bolts provide the strength and the butyl will provide
the water tightness. They will not leak again as long as you own the boat!
Follow the steps Compass Marine provides for using it around the bolts and
you will find it is an ideal solution for chainplates (and any other
hardware that has a nut on the other end--the one thing butyl requires is
compression...good luck!

-----Original Message-----
From: c320-list-bounces at lists.catalina320.com
[mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of jim brown
Sent: Monday, June 24, 2013 9:07 AM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] 3M 4200 fast cure

On our boat (hull 978 2004) the shrouds are attached to a plate on the deck
with a welded "eye" on it. There is an identical plate inside the cabin thta
the rod attaches to. The two plates are held together with four bolts that
go through the deck. I haven't removed them yet but I don't think that the
plates themselves penetrate the deck, just the bolts. I think (hope) that
with the two plates bolted together that adhesion won't be needed and that
the tape will provide a flexible seal. Fingers crossed. The youtube piece
from Sailrite and the youtube piece from Compass were very helpful-thanks. I
can see a lot of uses for this stuff. 

Jim 




________________________________
 From: Warren Updike <wupdike at hotmail.com>
To: C320-List at Catalina320.com
Sent: Sunday, June 23, 2013 4:44 PM
Subject: Re: [C320-list] 3M 4200 fast cure
 

If Jim is referring to what I call chain plates (thingies that penetrate the
deck and attach to the ss rods in the cabin,) then I don't think butyl tape
will work for that.  I'm not even sure 4200 is the best.  On the advice of
our marina I used BoatLife LifeCalk about 8 years ago and they are just
beginning to leak now.  There may be even better products out there now by
Sylkaflex, 3M, and others.  The qualities needed seem to be: strong adhesion
and flexibility.  
Jim doesn't say what year is his hull; but, if it is an early one, it might
be a good idea to remove 1/2" of deck core and replace with filled epoxy to
prevent water entry to the core.

Warren & Pattie Updike
1994 C320 #62 "Warr De Mar"


-----Original Message-----
From: Bill Hutt [mailto:bhutt at windstream.net] 
Sent: Wednesday, June 19, 2013 3:05 PM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] 3M 4200 fast cure

I use butyl tape for anything that requires a water tight seal but does not
need adhesion.
Bill Hutt
"Caribbean Soul" #570
Cleveland, Ohio

-----Original Message-----
From: dprudden
Sent: Wednesday, June 19, 2013 11:20 AM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] 3M 4200 fast cure

For what its worth, I've picked up 4200 at Walmart before (and its less
expensive).

Sent from my iPhone

On Jun 19, 2013, at 8:45 AM, jim brown <jbrown5093 at yahoo.com> wrote:

> My starboard deck fitting for the lower aft shroud is leaking slightly 
> in heavy rains. I had planned to rebed the deck fitting using 3M 4200. 
> Three area WM stores are out of it in the 3 oz tube (don't need the 
> large size) and 2 stores said that 4200 has been discontinued by 3M 
> (however it's still listed on the 3M website). Any information on what 
> to replace it with (don't want to use 5200) and whether the rumor is true?
>
> Jim Brown