TT said
"Put it in a mould.
This can be a simple wooden box/tray. Helps if the woodis wet when ya do it.
Or you can make plaster of paris moulds,
Or sand."
UNDER NO CIRCUMSTANCES MUST YOU LET WATER (or damp) COME ANY-WHERE MOLTEN LEAD, THE WATER CHANGES IMEDIATLY TO STEAM AT WHO-SO-EVER PRESSURE EXPLODING MOLTEN LEAD FOR MILES
Lead melts around 750 degrees F'
I use sardine tins and melt the lead into those, a standard? tin holds 3 1/2 lbs I paint this yellow and the boat has a box in wood strip also painted yellow ballasting is simply putting coloured tins in respective boxes, one weight set fits all boats,
Hope I am not too late, I am not the only one to try this :-[
As an aside...wheel weights contain a lot of antimony which raises the melting temp to around 900' F, and printers type is even harder and melts over the 1000' F, (a former user of lead projectiles competitively. non combat)