do you mean you are trying to get rid of the textured grain stuff on the plastic?
i'm possibly wrong, but can't you get a spray (primer i think) that fills any small holes as well as giving a paint coverage.
this saves the need to rub down.
Saxperience Hardcore!Joined: May 2004Hull (England)Posts: 187091.6 vtr
#7
sand down with wet and dry it will take a while and many sheets
then get plastic filler primer to make sure its all smooth