I was watching a tutorial on youtube for getting a plastic finish with smooth on's 65D plastic and Wickes PVA glue. https://www.youtube.com/watch?v=MDwQg6CX25A (5:40 roughly)
I can get the smooth on product but wickes does not sell/deliver to the US.
The PVA glue is beneficial because it gets tacks why introduced to moisture which is helpful to give the smooth on plastic something to better adhear to when painting on.
Is there an alternative glue that could be used?