Hi, my new Lee 0.457" RB mold arrived yesterday. While all the advertising photos show the vertical and horizontal bar alignment method, this mold uses the cone method. In the past I have had lots of problems with the bar alignment version of Lee molds. There is always a pronounced large seam on the projectiles with the bar molds, the cone method produces better projectiles.
Cast 500 balls this morning and other than the first 2 cast, they all are excellent. Now that I have been using the bottom pour pot more and more, I am noticing that there is significant thick buildup of oxides on the internal pot chamber. Simple wax fluxing doesn't seem to break up that grunge like with my dipper pot. It requires manual scrubbing the walls with a ladle or old spoon. Besides raising concerns for pot leakage, the buildup of oxide must act as a thermal insulator that could mess with heat regulation.
All in all though, the bottom pour pot has really increased my casting productivity compared to the ladle system.
Regards,
Richard