SailNet Community - View Single Post - hull prep question
View Single Post
  #2  
Old 04-05-2005
Jeff_H's Avatar
Jeff_H Jeff_H is offline
Moderator
 
Join Date: Feb 2000
Location: Annapolis, Md
Posts: 6,445
Thanks: 3
Thanked 64 Times in 47 Posts
Rep Power: 10
Jeff_H has a spectacular aura about Jeff_H has a spectacular aura about Jeff_H has a spectacular aura about
hull prep question

It sounds like you are grinding through a number of materials. If the grey material is comparatively thin, like a thick coat of paint then someone has applied either a vinylester or epoxy barrier coat on the boat during its lifespan. There were also grey polyester fillers that a lot of boat builders used to fair between the sump and the ballast keel.

More than likely the blue fibers in clear matrix is a resin rich polyester laminate which is very typical of that era. Unless the boat has had a peel and has been built back up, it is unlikely that there is epoxy anywhere in the boat''s construction.

1971 is just before the period of the worst blister prone resins. That said, the resins of that era were typically mixed with a lot of accelerator which can result in pourosity over time. In otherwords a barrier coat would be good idea.

Jeff
Reply With Quote Share with Facebook