Everything you need to know about Sanding!
here for a printer friendly version of Tip
or closed coat?
the exception of Flint, all abrasives are available in a choice
of two coatings. Open Coat papers are made with
their abrasive materials covering only 50% to 70% of the backing
surface. Since the open areas between their abrasive particles
will allow the dust and residue to fall out more easily with
less loading, they're best used for machine sanding
operations or for sanding resinous or gummy materials. All
Shopsmith abrasives are Open Coat.
Coat papers have a solid covering of abrasive materials.
As a result, there is more cutting surface on the paper, resulting
in a faster cutting action. However, Closed Coat
papers will load up more quickly. For these reasons,
Closed Coat papers are best reserved for hand
on to...Hand or Power Sanding?
Back to Cloth or Paper Backing?