Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help
 

Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

View PDF (460 KB bytes)

Title: Sawing to reduce warp in plantation red pine studs

Author: Hallock, Hiram; Malcolm, F.B.;

Date: 1972

Source: Res. Pap. FPL-RP-164. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 27 pages

Publication Series: Research Paper (RP)

Description: Large volumes of red pine (Pinus resinosa) from plantations in the Lake States and the Northeastern States are about to appear on the saw log market. One of the most important products of small saw logs is studs (2 in. x 4 in. x 8 ft.). A study has been conducted by the FPL which examines the relationship of two industrial and one FPL sawing method on the subsequent warp in the studs from this species. Results generally indicate that the species is suitable for studs. There is significantly less warp in studs sawn by the FPL method than the industry methods. Also one of the industry methods is significantly better than the other. The mean crook of studs from butt logs is much greater than in those from upper logs. The opposite is true with respect to twist. Studs sawn from the outside of the log are always lower in warp than from the inner area. This would appear to be the main reason for the superiority of the FPL method over the commercial methods. When all aspects of warp are considered the best industry method yielded 73 percent from butt logs and 84 percent from upper logs which met the "stud" grade of the new National Grading Rules. Comparable yields by the FPL method were 79 and 87 percent.

Keywords: Pinus resinosa, red pine, warp, studs, sawing

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

XML: View XML

Citation:


Hallock, Hiram; Malcolm, F.B. 1972. Sawing to reduce warp in plantation red pine studs. Res. Pap. FPL-RP-164. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 27 pages

 


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.