its a lot nicer to work with. on thing i would suggest when making your buck... spray bomb or coat it with something because the wax just soaks into the mud and makes for a longer process to separate the buck.
we have a passenger side mold. this is taking way longer then i had planned recommend not using the spray foam. the dry wall mud is great but the foam.. worth spending the money for the good pour in place foam.
recommend not using the spray foam. the dry wall mud is great but the foam.. worth spending the money for the good pour in place foam. 
Hybrid Mode
