8

Parts & Service: 020 8988 7400 / E-mail: Parts@clarkeinternational.com or Service@clarkeinternational.com

PAINT THINNING

Paint thinning is particularly important when spraying. Many paints are

supplied ready for brush application and need to be sufficiently diluted for

spraying purposes. Always follow the paint manufacturers instructions. If in

doubt, always consult the paint manufacturer.

A Viscosity Cup (not supplied), will assist in determining the correct thickness of

the paint.

The ideal viscosity for most paints is as follows:

1. Dip the cup into the paint and fill to the brim. Time how long it takes for the

cup to empty.

2. Thin as required until times are achieved.

3. Alternatively if a viscosity cup is not available, the following information

can be used as a rough guide.

• Water based paints (emulsions) 10-20% water.

• Oil based paints (gloss) up to 10% thinners.

• Cellulose paints up to 50% cellulose thinners.

If in any doubt, contact the paint manufacturer.

4. Having mixed the paint thoroughly in a separate container, pour into the

spray gun paint container through a fine filter.

• DO NOT OVERFILL PAINT CONTAINER - never more than three

quarters full.

Water based paints

35-45 secs

Oil based paints

15-25 secs

Enamel paints

15-25 secs

Primers

20-30 secs

Varnishes

20-25 secs

Aluminium paints

15-25 secs

Wood preservatives

Do not dilute

Wood Stains

Do not dilute

Smooth masonry paint

Dilute by 10-15%