Guys,
I hate to start a thread about a topic that I'm sure I've seen posted here previously, but I just can't seem to find info on how to treat or season a new Lee aluminum mold.
I dug out my long unused pot and fired it up last week with the intention of casting a pile of boolits. Everything went along just fine, my pot of linotype was liquified, molds, (a 6 cavity for my .44s and a 2 cavity for my 7.62x39) sitting across the top of the Lee pot to warm. Everything was going just fine except that I kept getting wrinkled bullets from both molds.
I was casting in about 50 degree temps, so I reasoned that maybe my lead was a bit on the cool side and just wasn't filling out the molds well. I slowly adjusted the temp on the pot upward to the point where I started getting frosty bullets, but the wrinkles, though fewer, were still there. Also, the edges of the bands weren't all that sharp.
I've read that this can be caused by contaminants in the mold. My question is this-what is the simplest, most economical way to treat these new molds?
Thanks for any help!