Wood finishing is post about Magazine bookmarked by nicholas with ID 13096760342 was uploaded on 06-04-2019 and has been viewed 371,188 times.
Varnish For many, varnish is the king of finishes.It produces a clear finish with a lot of depth; has superior water, abrasion, solvent, and heat resistance; is relatively easy to apply; and has good rubbing and polishing qualities.
On the down side, some varnishes yellow with age; they are notorious for becoming embedded with dust (because they cure slowly); and they are difficult to repair.Nonetheless, the benefits of varnish far outweigh its drawbacks.
The Long and Short Of ItVarnish is made by cooking oil with a resin.The oil can be linseed, tung, soya, safflower, or the like.The resins can be natural (made from pine tree sap or gum turpentine), or synthetic (made with phenolic, alkyd, or polyurethane resins.
Metallic dryers are also added.Varnish that has a lot of oil added to it is called long oil varnish, and sold as spar, marine or outdoor varnish.More oil makes the varnish more flexible.Short oil varnish has less oil added, which makes it harder.
Short oil varnish is the typical varnish you use on furniture and interior trim work.Varnishes are 'reactive' film finishes.As the thinner (i.e.mineral spirits or naphtha) in varnish evaporates, the resin molecules react with...