Brushes are made of all sizes, both round and flat, and are chiefly of bristles; the best for outside work are called wall-brushes, from three to five inches in width. For inside and small work the round brush is best. When out of use, brushes should be carefully washed in turpentine and laid out of the reach of dust. When using, they should be left over night immersed in linseed oil or turpentine.

Varnish brushes should be washed in turpentine, and should they be left full of varnish and dry they may be cleaned by soaking in alcohol for twenty-four to thirty-six hours. Where it is practicable, a separate brush should be used in different colors; especially is this true where delicate tints are used.