Quote Originally Posted by fish_4_all View Post
With all I have found it doesn't make any sense that any of the alloys used in the stuff should even be close to having a problem with 350F. All of them have melting points well above 350, tin 449, bismuth 520 and lead 622. I am not sure if the head is getting too hot or what but my stove is right on. I will admit I don't know diddily about the temp the jig heads get or their heating qualities so maybe they do hotter than 350 in the oven.
That's what I figured and why I suggested checking your oven temp.

I have an oven thermometer in my toaster oven ($4 at Wal-Mart). On initial start-up of my toaster oven on a 350* setting my little oven will heat up to 425* and then after about 15 min. it will drop down to 350* and hold steady for the rest of the time. I messed up a couple batches of jigs before I got a thermometer and figured out what was going on. Now I watch the thermometer and adjust the temp manually.

There's quite a bit of trial and error that goes with pouring and powder painting jigs, and every time you switch materials it seems like you have to start over.:rolleyes: Keep working with it and you'll get it figured out.