I heat cycle all of my molds. Casting to build patina takes too long, and produces bad cast.I no longer scrub new molds. both NOE and Arsenal come pretty darned clean. I so shot a bit of break cleaner in each cavity before the heat cycling. I also use the cleaner every other casting session and lightly molke afterwards. This seems to keep the mold cavities in top shape. Knife
Don I think that I'll pass on the hunting for today, it's only about 24 degrees out right now and ain't gonna get to 32 til noon, I'm really running low on my 19.5 grainers.It must be all the plinking I've been doing with them because I started out with well over 500 of them.