Jig pouring help and questions

[toppwatr]

Ok so i just started making my own jigs. but i have a few questions.

One: i have an order of 10 pounds of soft lead ingots coming in the mail from ebay. I had used some wheel weight home made ingots in my pot just to experiment for the past few days, so there is some junk coating the layer of lead on the bottom of the pot, but i cant skim it off its too hard to reach. when my pure soft lead comes i dont want ANY junk in that at all! how do i totally empty out my pot, i want nothing in it. I just dont want any hard lead and other junk mixed in with my soft lead. right now theres about an inch of hard lead in it. how do i totally empty it out??

Two: can you use this paint to paint jigs? I plan on using a base color and then going over it in a clear coat to make it glossy. Powder paint will not work for me.

http://www.lurecraft.com/catalog.cfm...vinyl-1oz:2617

Three: also, can anyone tell me approximately how long a 1 oz. paint can will last me? a 4 oz.? i plan on buying a 4 oz. in black being that that is a pretty good color to have alot of.

Thats about it. i really appreciate anyone who answers im pretty new to this. Thanks alot.