Wood Finish Vs Varnish,Wood Carving Onlay Products,Woodworking Shaper Bits,Diy To Build Outdoor Furniture Plans - Videos Download

12.07.2015, admin  
Category: Dresser Woodworking Plans

For varnish brush clean-up, dunk the entire brush into paint or lacquer thinner in a clean bucket, working the brush against the bottom of the pail. The principal disadvantage of a shellac finish is that water stains it; another is that alcohol dissolves it.
These finishes are manufactured in a variety of formulations, some of which have a resin base, some an oil base. Natural varnishes are made from natural resins suspended in an oil base (typically, boiled linseed or tung oil); the solvent used is turpen­tine or mineral spirits. Polyurethane is a water- or oil-based plastic resin used for coating wood or as a wood finish.
This comparison talks about polyurethane only in the context of wood-finishing and coating, not in the context of manufacturing high-resilience foam products as it is usually understood. Price Varies greatly, but 10-20% more expensive than varnish for comparable brands. Polyurethane finishes are very hard and durable, and because they cure into a solid layer of plastic, they give treated wood more protection against scratches and abrasions.Oil-based products are even stronger and more durable. Varnish is more flexible (unless applied incorrectly), which helps reduce cracking and splitting if there is movement of the treated surface. One of the primary advantages of varnish other than its flexibility is its natural resistance to UV rays, making it last longer in areas of sun exposure.
Varnish is less forgiving in the application process, and if not done correctly, will be prone to peeling, cracking, bubbling, or not even fully drying. Polyurethane is more commonly used around many household projects, including on wood floors, smooth furniture like desks and bookshelves, and even on outdoor decks now that UV protection has improved. True varnish made from oil and resin (and not containing any plastics) is still popular in demanding niches, and remains popular with boaters and furniture makers due to it’s durability in sun and water, and it’s flexibility. One is to seal the wood, in order to prevent moisture from entering the grain and to protect it from heat, scratches, or even insect.


As the name suggests, stains are coloring agents that are used to change the color or shade of the wood. This is the old standard, though it’s used less and less often these days, as advances lead to new, quicker, and easier-to-use finishes.
A French polish shines with a mellow, reflective qual­ity that is its greatest appeal—but, since its key ingredient is shellac, it does not protect the wood from heat or moisture damage (again, water-glass rings and the like are a continuing concern). The word varnish has become something of a catchall term applied to a variety of liquid preparations that, when applied to a sur­face, dry to a clear, hard, and often shiny surface. A wide variety of natural varnishes are sold for different uses, from marine applications to gymnasium floors to furni­ture. Varnish is an older type of finish made from resins, oils, and solvents, but very often, the term "varnish" is misused as a generic name for all types of wood finishing. Varnish lasts relatively longer in areas of sun exposure as the higher amounts of solids make it naturally resistant to UV rays. Although UV protection is now being added to some polyurethanes, its still considered less effective against sun damage than varnish.
Once any of these problems happen with the varnish, the wood will be more exposed to the harm of water damage.
No matter which finish you decide to use, good luck and remember that patience and hard rubbing pay off.
In fact, stains are not techni­cally a finish because a simple stain requires a coat (or coats) of varnish or another finish on top to protect the wood. Some combination products are sold in which a stain and a sealer are applied to the wood at one time.
Often sprayed on, penetrating-oil stains have the advantage that the next stage in the finishing process can begin within a few hours be­cause they dry quickly. For many pieces of furniture that originally had that finish (or modern copies of such furniture), it really is the appropriate choice.


It contains a higher amounts of solids, and tends to give wood a tinted color when applied. Varnish is thinner than polyurethane, and requires the the application of more layers, and these layers take a long time to dry, leaving the project vulnerable to the elements. It can be applied to both raw and newly stained wood, or over older varnish if the wood is thoroughly sanded.
Among your options in finishing wood are stains, varnishes, paints, and rubbed oil finishes.
Penetrat­ing oils are extremely durable and resist both scratching and water damage, because the finish penetrates beneath the surface, sealing and protecting the wood. Gloss and semigloss have the virtue that they can be washed and even scrubbed; flat or satin finishes have a soft, understated presence.
Oil-based polyurethane offers slightly more protection for the wood, but is more toxic and takes much longer to dry.
Finish up by slapping the brush back and forth over a corner of a clean board, and work a dry rag through the bristles a final time. Again, a lot of patience and slow, light but long strokes are the key to a good-looking finish. The biggest drawback for varnish is that it will eventually crack or peel, and water and mold can discolor the wood beneath. Don’t apply more varnish, but smooth the varnish already there in long, even strokes.




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