Hey guys I am looking for a ball head mold that will do 3/16 I don't see one from do-it on stamina or barlows.

One idea I had was to take a regular barbed colar mold and put some bondo on the area for the barbed colar on the 1/4 oz head then it would be about 3/16. Will bondo stand up to the heat of lead?

I know they make the special shakey head mold that has all the weights. I want a plain ball head no colar that I can modify with a srew lock for the worm keeper