Generally, the hardwood is sold in tables that are measured in feet. This is equivalent to a table of 144 pulgadas3 volume (1 inch thick x 12 inches wide x 12 inches of length). In order to estimate how much wood to buy, it is important to calculate how many feet contains the wood. To calculate a wooden feet, compute the volume of wood in inches (the thickness by width by multiplying the length), and then divide the result by 144 pulgadas3. You must perform the necessary conversions when the unit of measurement other than inches. After estimating how much wood you will need for your project, buy a 10-25% more than estimated if the material had a defect. The most available in the market, with the exception of pine, Woods should be coated. Rough or not coated Woods tend to be sold in nominal dimensions of 4/4, 5/4, 6/4, etc. One-piece coated 4/4 lumber usually has a thickness of 7/8, 1/8 thinner than the original part. If the desired thickness is 1 inch, you must buy 5/4 wood or W4. Selecting the best wood market requires a detailed observation. No wood is 100% efficient, therefore, it is important to choose one that has the fewest defects to maximize its use. It is advisable to search for and select personally the tables, those that possess color and nice graining. Synchronize your workpieces purchased once the wood, the next step is to balance it. Squaring wood means shaping to make the faces of wood perpendicular among themselves, i.e., must be at the correct angle between them. Make sure that the saw blade is parallel to the side of the table. The square process is completed with a milling machine and, with the aid of a ruler or square and a brush of Carpenter. To check the quadrature, measure the edges using a false square.