depending on what the mould looks like this is how i do it. red TLine ask for the nylon sinker red cord , not the orange one its not as hard and it melts . precut all your nylon to the length you want bend them into a V open mould,slide nylon through hole in each side of the mould,close -pour with soft clean lead wait for a few seconds then open one side only and lift out sinker .my one girl that works for me does about 200 a morning 6oz and 7 oz . if the mould gets too hot puor a sinker keep it closed with sinker inside and dip the whole thing in water .there will be no explosion as the water doesnt get into the mould and evaperates with the heat but it must be full and close .
post a pic of the mould you got .