[Rhodes22-list] Bill Davidge ... before painting...

[bill davidge]

ED

  I still have a lot of work before I start painting I spent some time on nibble.. and some books   I pick up.. What I was going to do was wash with 202, Sand with 80 gr. sand paper  then wash again  with 202  and spray it down with a hose before starting to paint . 
 I went over the hull after it was sand blasted and fond a few small blisters. which were filled with water a far as i was able to tell 
  Bill

----- Original Message ----
From: Tootle <ekroposki at charter.net>
To: rhodes22-list at rhodes22.org
Sent: Monday, April 7, 2008 5:23:16 PM
Subject: [Rhodes22-list]  Bill Davidge ... before painting...

 
Bill:

     You said that last fall you had bottom sand blasted.  Some people think
the gel coat is waterproof.  It is not and some moisture has leached out of
the underlying glass and the glass hull has dried.  The leaching process is
not just plain water but also contains chemicals.  Chemical analysis would
likely show an acidic leaching.  Before painting, wash hull with soap and
water and then wash with acetone before painting.  You will get a much
better bond.

Ed K
Greenville, SC, USA
addendum:  A strongback is a beam or girder which acts as a secondary
support member to existing structure. In shipbuilding, a strongback is
oriented lengthwise along a ship to brace across several frames in the case
of hull damage.
-- 
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