[Ollie]

right there is a trick i have been told to using the hammerite smooth finish.

You need to buy the aerosol cans, then you puncture them and cut it open, this will gain you access to the paint inside.

WHY DONT YOU JUST USE THE BRUSH ON STUFF I HEAR YOU CRY!!

Well the aerosol can paint is loads thinner and when brushed on it gives a much better finish and gets in to all the little crevisis you need it in.

Hope that helps.