View Single Post
  #6   Report Post  
posted to rec.boats.building
Matt Colie
 
Posts: n/a
Default Lead for hollow keel

Sam,
Is one of your proposals to melt this lead and pour it into the
fiberglass keel shell?

This would cause some problems.

Either Polyester (265F-125C) or epoxy (325F-160C) will not like having
molten lead at 650F-345C poured into it. The strength loss will be
significant at those temperatures and will be a permanent degradation.
Plus - If there is any moisture in the place the molten metal is being
poured there will be an explosive state change. (It is not an explosion
in the chemical sense oe even the same as the failure of a pressure
vessle - but it might just as well be.) Lots of molten metal goes
flying and sticking to things.

Been there -
Done that -
Didn't get the picture -
Bought the T-shirt, it's worn out.

Matt Colie

sam wrote:
I scored 350 kg of lead over the weekend for free from various tires
centres. I found outwhat the trick is.... go to tire centres where they sell
a lot of mag wheels... they use adhesive backing instead of clips to attach
to the wheel. I still have weights with clips but not as many. In the mortal
words of Homer Simpson...YoooHooo!!!!
They are to go int a hollow fin keel for a hartley 21. Should I fust pour
them in and cover with epoxy or should I melt the lead and poor into the
keel?