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Hardwood Record — Veneer & Panel Section 



March 25. 1919 



SPECIALISTS IN 

 DIFFICULT ITEMS 



We Manufacture 



ROTARY CUT VENEERS 

 THIN LUMBER SPECIALTIES 



BIRCH DOOR STOCK 



MAPLE PIANO PIN BLOCKS 



ELM HOOPS AND LINERS 



YEARS OF EXPERIENCE BEHIND OUR PRODUCTS 



MUNISING WOODENWARE CO. 



MUNISING, MICH. 



VENEERS FOR 



AEROPLANE CONSTRUCTION 



A SPECIALTY 



WRITE. WIRE OR TELEPHONE 



BIRDS EYE VENEER COMPANY, Escanaba, Mich. 



stuff three months and things were going smooth. Aint 

 it the truth, Jim. that carelessness sure raises most of the 

 trouble in this world. 



That guy also told us to be sure to watch our pres- 

 sure, and to put on about a hundred pounds pressure 

 to the square inch. He left us a pressure chart. 



Jim, you can plug to have them put in vegetable glue 

 where you are. 1 am absolutely convinced it is all right. 

 And I want to say that in spite of the fact that we have 

 been looking things over mighty close, we haven't found 

 any blisters and scarcely a loose edge since that fellow 

 was here. Your friend, 



Henry. 



Record Veneer Panels 



What is said to be the largest veneer panel ever made is credited 

 to the Haskelite Manufacturing Corporation of Grand Rapids, 

 Mich. It is one of a series of waterproof panels made for the 

 government to be used as part of a sea sled. The panel is 53 feet 

 long, 7]/2 feet wide and ^/g inch thick, of mahogany and Spanish 

 cedar. Information is not at hand as to what was the final out- 

 come of the sea sled proposition. It was probably a part of some 

 war machine, and was abandoned when the war came to a close. 

 Early in the war it was believed impracticable to make panels 

 twenty-four feet long, but apparently it did not turn out to be 

 impracticable. 



Invention of Rotary Veneer 



It is commonly believed that the cutting of veneer by the 

 rotary process is an invention of quite recent date, but it appears 

 that it was in use in Russia more than seventy-five years ago. A 

 book published in 1845 by Charles Knight & Co. contains the 

 following account of cutting rotary veneer, which had then been 

 in use several years in Russia: 



"The operation is begun by placing the log on a square arch, 

 and turning it to a circular or cylindrical form while in rapid 

 motion. The blade, a piece of highly tempered steel, rather longer 

 than the cylindrical log of wood, is fixed at the extremity of a 

 frame six or seven feet long, in such a manner as to exert a con- 

 stant pressure upon the cylinder of wood, and pare of? a sheet of 

 equable thickness, which folds upon another cylinder like a roll 

 of linen. 



"The frame is so regulated as to depress the plane in propor- 

 tion as the cylinder becomes pared away towards the center. 



"This machine is said to cut the most valuable w^oods without 

 any waste, and with great rapidity, while the thinness to which 

 the veneer is cut is so extraordinary that it has been used for the 

 covering of books and other purposes, where leather and paper 

 are usually employed. 



"The veneer thus produced is, in fact, nothing more nor less 

 than a shaving, but one of which the thickness is uniform and 

 equal. It is said that one hundred feet in length may be cut on 

 this machine in three minutes." 



Veneer Company Will Build New Plant 



The American Veneer Company, organized last fall at Hay- 

 ward, Wis., with a capital stock of $150,000, will start work 

 within a few days on the erection of its new plant, which is ex- 

 pected to be ready July 1 and employ from 1 00 to 1 50 men 

 in the manufacture of veneers, veneer panels, etc. The main 

 building will be 180x2 50 feet, one story high. The Edison phono- 

 graph interests have contracted for a considerable part of the 

 output of veneer panels to be delivered at its factories in New 

 London, Wis., Grand Rapids, Mich., and East Orange, N. J. 



The Strength of Commercial Liquid Glues 



Most of the commercial liquid glues are manufactured from the 

 skins, heads and sw^iinming bladders of fish. Others are made by 

 special treatment of the glue extracted from the hides, skins and 

 bones of cattle; some for special uses are prepared from starch, 

 from various natural gums, or from casein. 



At the Forest Products Laboratory, Madison. Wis., tests w^ere 

 made by B. A. P. inspectors on a number of these liquid glues, 

 who found that they differ very widely in strength. Some of them 

 are so weak as to be entirely unsuitable for woodworking pur- 

 poses, while others compare favorably in strength with the "hot ' 

 glues. The glues tested varied from one which exerted a binding 

 force of less than 50 lbs. per sq. in., to one with an adhesive 

 strength 60 times as great, or more than 3,000 lbs. per sq. in. 



Liquid glues may be tested by gluing together pairs of specially 

 selected hard maple blocks, placing them in a testing machine, and 

 measuring the force required to shear them apart. About 300 

 specimens, representing 26 different glues, have been tested in 

 this way at the laboratory. According to the data thus obtained, 

 a high grade liquid glue should have an average shearing strength 

 of not less than 1,700 or 1,800 lbs. per sq. in. 



In addition to uniform high adhesive strength, it is evident that 

 certain other characteristics are desirable in liquid glue. When 

 spread upon w^ood surfaces, it should "set" and dry rapidly. In 

 its container, it should remain fluid and workable at all ordinary 

 temperatures. It should be elastic and shock-resistant. It should 

 not be unusually susceptible to the action of high temperatures, 

 high humidity, molds and bacteria. 



The study gave evidence that the strength of liquid glue, like 

 that of "hot" glue, depends largely upon its "body" or thickness, 

 or, strictly speaking, upon its viscosity. Of 1 1 liquid glues ex- 

 amined, the thickest or most viscous glues showed the greatest 

 adhesive strength. 



Several woods produce veneers beautiful in color and 

 figure, some native, others foreign. Among the domestic 

 species in that class are red gum. black walnut, cherry, 

 oak, birch, and maple. These are hardwoods. Some 

 of the native softwoods are esteemed on account of 

 beauty, among them being yellow pine and Douglas fir. 

 Most foreign woods imported into this country and con- 

 verted into veneers are valued on account of their beauty. 

 A large part of all imported woods goes to veneer mills, 

 and from these mills it finds its way to furniture and finish 

 factories, 



