Hi everyone, need some help please? A mate is doing me a favour casting up some blanks using Pistachio Shells. I am not sure what resin he has used, but the 1st blank didn't stick to the shells, so he washed them, dryed thoroughly and recast. 2nd blank was better, but I am still lifting the resin out of the shells.
Any idea how to remove the oil in the shells or should we just give it away if it won't work.
Thanks,
Rgds,
Crocy.