Bondo Mold Wuedtion

I use bondo
Three good coats of wax polished
And get rid of undercuts

 

I mix resin in bondo

 

I use bondo molds to cast my cactus pedals. And use bondo to cast the pedals, as Clew said, 2-3 coats of car wax in the mold, then I mix resin and bondo to make a thinner casting material then put it in the mold fill the mold and rotate to get coverage in the mold then wait till it starts to kick and check to see if it has started to set then I will pull the cast and let it finish kicking. they look great!