In article , "The Natural
Philosopher" says...
Rob Morley wrote:

In article , "The
Natural Philosopher" says...

JoeJoe wrote:


What is the difference between a primer and an undercoat?

Primer is there to stick to the ioriginal surface and seal it and
possibly to create a smooth surface - i.e a good primer sticks well to
teh (wood) is thick and can be sanded to give a toally grain free finish.
The unedrcaot is there to basically provide MOST of tghe coulr - its teh
bit that reflects most of te light.


Primer doesn't give much build, it's the undercoat that you sand for
a smooth finish.

Depends. I use filler primer a LOT on stuff that has to have an
immaculate finish. It is often the best place to fill grain.

Primer filler is a special case because it's designed to build, not
just to seal like ordinary primer.