On 25/11/2016 16:22, Andrew wrote:
Wickes fine surface filler can be applied like normal gypsum
plaster, but unlike gypsum plaster you can scrape (*) and sand
it to get a flat finish.

(*) When set but, before dry use the long edge of a steel ruler
at about 30 degrees to remove excess, then when dry
use a sanding block.

Thanks for the tips.