bondo = davids p38 , isopon.
the only difference is that bondo is a little more malleable and easier to apply .
davids p38 however is a better grade filler ( stronger ) .
the only downside to using p38 is that it sometimes leaves very small pin-holes on the surface( trapped air ) .
davids now do a new version of p38 that is pin-hole free . check the website for the code
