Im new and will be making my first piece next week. I am making a small part and was told to only use only WAX releases agent and not PVA on the finish part of the mold when infusing to make sure the finish is perfectly even and doesnt have any marks like when applying the PVA. Is this safe to do? I was thinking of getting a small spray bottle for spraying pva instead because im worried just the wax will not allow easy release.