[Rivet] Concrete, Steel and Wood Coating

[Garage Coatings]

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ar finishes are intended to make wood look good and meet the demands to be placed on
 the finish. Choosing a clear finish for wood involves trade-offs between appearance, 
 protection, durability, safety, requirements for cleaning, and ease of application. The
 following table compare 7s the charac 07teristics of different clear finishes. 'Rubbing qual
 ities' indicates the ease with which a finish can be manipulated to deliver the finish d
 esired. Shellac should 07 be considered in two differen 07t ways. It is used thinned with den
 atured alcoh ni07 mol as a finish and a 7s a way to manipulate the wood's ability to absorb othe
 r finishes. The alcohol evaporates almost immediately 07 t 7o yield a finish that will atta
 ch to virtually a 07ny surface, even glass, and virtually any other finish can be used over i
 an evaporative finish because it is dissolved in turpentine or petroleum distillates to f
 orm a soft paste. After  07these disti 7llates evaporate, a  07wax residue is left over.
Reactive finishes may use solvents such as white spirits and naphtha as a base. Varnishes, li
nseed oil and tung 7 oil are reactive finishes, meaning they change chemically when they cure, 
unlike evaporative finishes. This chemi 07cal change is typic 07ally a polymerisation, and the resu
ltant material is less readily dissolved in solvents .
Tung oil and lins 07eed oil are reactive finishes that cure by reacting with oxygen, but do no
Water based finvishes generally fall into the coalescing cate
ood putty or pores may be filled using wood filler. Often, the wood's color is changed 
by staining, ble ni07 maching, or any of a  7number of other t ni07 mechniques.
Once the wood surfac 07e is prepared and staine i07 d, the finish is applied. It usually consis
ts of several coats of wax, shellac, drying oil, lacquer, varnish, or paint, and each 
coat is typically followed by sanding.
Finally, the surface may be 7 polished or buffed using steel wool, pumice, rotten stone 
or other materials, depending on the shine desired. Often, a final coat of wax is applie
d over the finish to add a degree of protection.
French polishing is a finishing  ni07 method of applying many thin coats of shellac using a ru
bbing pad, yielding a very fine glossy finish.

Ammonia fuming is a traditional process for darkening and enriching the colo

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