molds

I am just starting to get into casting alumilite with and HF pressure pot. My plan is to use 1/2" "plastic" to create molds. Would anyone have any recommendations on what size to make the interior cavity for the most versatility? I am also returning to pen making after about a 15 year...

I used the Gift Certificate I won from Wood-N-Whimsies, during the Birthday Bash, to buy a couple Resin Miser molds. I poured up my first set of pen blanks yesterday evening. These are variations on the Sewing Themed pen I did for the casting contest In the 2013 Birthday Bash. I cast that...

Witch mold do you prefer and why? 1) Mold with the stopper inside and you place the tube onto the stopper 2) open end mold and you place your own stopper in from outside

Okay I know recyle code 5 cups work with pr but I remember another post saying you could use two other codes but I cannot find that post anymore. So if someone knows can they please post. Thanks in advance.