How did you go?
I've bought some 8lb and 10lb moulds and like you - sometimes they work out perfectly but often, they don't have a shiny finish.
I was looking at making a metal funnel to help get them perfect everytime but if I can perfect it without that, it would be easier.
Also, do you guys try and pour directly into the hole at the top or try and run it so it goes around the lip? Again, I've tried both but never seems to be consistent results. I use a large ladel, which I feed a small ladel into (i.e. pour the small one into the bigger one, which then feeds the hole) to ensure it is one continuous pour.
David