Xtreme recommended! – White Aluminium A3 Double-sided practice panels.
These panels are great for showing off your work as they can be lacquered after you complete your artwork. Great for airbrush when scratching and erasing techniques are used.
Just peal back the plastic cover and scuff with a scotch-brite pad, then base with Auto-Air sealer dark or white and off you go.
(See Surface Prep Category for Scotch-brite pads and panel wipe)