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What is 3/4 plywood called?

Common Plywood Dimensions Nominal Thickness Actual Thickness 1/2“ 15/32“ 5/8“ 19/32“ 3/4“ 23/32“ 1-1/8“ 1-1/8“ 3 more rows •

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Plywood is a wood panel that is composed of several thin layers, or plys, of wood veneer. It comes in various thicknesses and sizes, and is typically sold by its nominal thickness. While the length and width are often the actual dimensions, the nominal thickness is usually different than the actual thickness. For example, a sheet of plywood with a nominal thickness of 3/ 4 ” is often less than 3/ 4 ” thick. This introduces challenges when precision measurements are needed, such as when selecting a router bit or sizing a dado saw blade.

What is the Actual Thickness of a Sheet of Plywood

Plywood is often sold in 1/ 4 “, 1/ 2 “, or 3/ 4 ” nominal thicknesses, but the actual thickness is often 1/ 32 ” thinner. Because the actual thickness may vary measuring the plywood is the only accurate way to determine its thickness. A 3 / 4 ” sheet is actually 23 / 32 ” thick. / ” sheet is actually / ” thick. A 1 / 2 ” sheet is actually 15 / 32 ” thick. / ” sheet is actually / ” thick. A 1/ 4 ” sheet is actually 7/ 32 ” thick. For most applications the 1/ 32 ” difference is not important, but for fine carpentry it may be critical to get grooves and cuts to be precisely the thickness of the plywood. For example, a groove for the base in a cabinet needs to be the exact thickness of the plywood or the cabinet will not be stable due to the loose fit of the parts.

Why is a 3/ 4 ” Sheet of Plywood Less Than 3/ 4 ” Thick?

There are a few reasons why the actual thickness of plywood varies. First, wood shrinks as it dries and moisture leaves the wood. This means that a sheet of plywood that started at 3/ 4 ” may shrink slightly after manufacturing. It’s not just plywood, other types of lumber are smaller than the advertised nominal dimensions for this reason as well.

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Another reason for varying plywood thicknesses is a range of manufacturing tolerances. Sheets are available in hardwood or softwood veneers, and in varying grades including sanded and unsanded. These different grades have different manufacturing tolerances and may vary more or less from the 3/ 4 ” nominal thickness. Plywood is almost always thinner than the nominal measurement due to the fact that most tooling in furniture and cabinet factories and manufacturing facilities can accommodate plywood that is thinner than expected but not thicker than expected. For this reason it is very common to see actual thicknesses on the thinner side and rarely thicker than the nominal measurement.

Common Plywood Dimensions

Plywood is most often sold in 4′ x 8′ sheets, but may also be available in 4′ x 10′, 4′ x 12′, or 2′ x 4′ sheets. Our plywood calculator can estimate the number of 4′ x 8′ sheets needed for a project. Plywood is usually sold by the sheet, but in some rare cases it may be sold by the board foot. Board footage is a measure of the volume of wood in the sheet. Our board footage calculator can help calculate how many board feet you need if your plywood is sold using that measure. The actual thickness of common types of plywood Nominal Thickness Actual Thickness 1/ 8 “ 7/ 64 “ 1/ 4 “ 7/ 32 “ 3/ 8 “ 11/ 32 “ 1/ 2 “ 15/ 32 “ 5/ 8 “ 19/ 32 “ 3/ 4 “ 23/ 32 “ 1-1/ 8 “ 1-1/ 8 “ The weight of a panel will vary by thickness and the type. Learn more about plywood weight for different types, including softwood, hardwood, marine-grade, OSB, MDF, MDO, and particle board.

inchcalculator.com - Actual Plywood Thickness and Size - Inch Calculator