by U.S. Dept. of Agriculture, Forest Service Forest Products Laboratory in Madison, Wis .
Written in English
|Statement||by William T. Simpson.|
|Series||U.S.D.A. Forest Service research note -- FPL-0223, 1972., USDA Forest Service research note FPL -- 0223.|
|Contributions||Forest Products Laboratory (U.S.), University of Wisconsin.|
|The Physical Object|
|Pagination|| p. :|
|Number of Pages||11|
Accelerating oak air drying by presurfacing () A comparison was made between the air-drying rates of rough and presurfaced northern red oak and white oak. In both species, the presurfaced material was about 1/8 inch thinner than the rough material and dried faster than the rough material. COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus. ACCELERATING OAK AIR DRYING BY PRESURFACING By WILLIAM T. SIMPSON and R. C. BALTES Introduction Previous research has shown the benefits of presurfacing oak lumber before kiln drying. Leney () showed that the tendency of red oak to surface check during kiln drying was reduced by surfacing the lumber before drying. McMillen. Without supplanting the two existing handbooks on kiln drying and air drying lumber, this handbook combines improvements in practice with new research findings to provide savings in costs and energy. It assembles scattered technology on accelerated air drying .
Robert McGuffy has headed up the wood-drying sequence at the Anderson-Tully Company's Vicksburg, Mississippi, hardwood-processing facility for decades. At this complex, the largest of its kind in the U.S., Robert has the responsibility for air-drying, and then kiln-drying, about 70 . is the temperature at which the drying takes place. Next in importance is the moisture gradient, or, as it is most commonly understood, the combination of the equilibrium moisture content of the drying atmosphere and the removal of moisture from the wood surface by the drying medium - rate of air circulation in air - and kiln drying. Although air-drying is inexpensive and easy,be aware of these drawbacks: It’s slow. Depending on the species and your climate, it can take from 2 to 12 months to bring 4/4 lumber from green to air-dry ( to percent moisture content, depending Author: American Woodworker Editors. Forest Products Laboratory (U.S.): Accelerating oak air drying by presurfacing / (Madison, Wis.: U.S. Dept. of Agriculture, Forest Service Forest Products Laboratory, ), also by William Turner Simpson, R.C. Baltes, and University of Wisconsin (page images at HathiTrust).
Accelerating oak air drying by presurfacing A comparison was made between the air-drying rates of rough and presurfaced northern red oak and white oak. In both species, the presurfaced material was about 1/8 inch thinner than the rough material and dried faster than the rough material. Im rush to finish a wedding present be Thursday (tomorrow) morning. Im finishing it in my air conditioned shop on Long Island. In the shop, its in the low 70s. Outside its been in the high 80s and low 90s and very humid.I put a wash coat of 1/2 lb shellac on Monday night, and it dried fine. Last. EXAMPLE USE OF THE AIR-DRYING ESTIMATOR An example will illustrate the use of the Air-Drying Estimator Excel spreadsheet. Assume that we want to estimate the air-drying time required for 4/4 red oak in the Charlotte, NC area. air drying, since many mills report penalties for overweights up to $4 and $7 per M fbm for Douglas fir and West Coast hemlock during part of the year. 5. Based on air velocities with , fbm, it is believed the volume per charge can be increased to at least , fbm with the same equipment. 6.