Or you could cast them into blocks to closely fit in the cavity, then fill
the gaps with smaller pellets to then be epoxy encapsulated. (I've done this
sort of thing with iron/steel, w/o the epoxy, to make a counterweight)
I've never cast lead, but would be more concerned with the risk Mike
mentions.

"sam" wrote in message
...
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?