Canadian wood products industries . flattens its product. In this class are includedsheets that are corrugated on the ends as well asthose containing knots, each one of which causesthe veneer to buckle for a considerable distancearound it. Many a piece of crossT>anding has beensaved in a plate machine because in no other waycan a knot or a cross-grained piece be brought downflat without splitting. Finally, the owner of a plate machine is not de-pendent on any one mill for its supply of veneer. Heneed only require that the veneer be properly full well that the re-drier can lie de
Canadian wood products industries . flattens its product. In this class are includedsheets that are corrugated on the ends as well asthose containing knots, each one of which causesthe veneer to buckle for a considerable distancearound it. Many a piece of crossT>anding has beensaved in a plate machine because in no other waycan a knot or a cross-grained piece be brought downflat without splitting. Finally, the owner of a plate machine is not de-pendent on any one mill for its supply of veneer. Heneed only require that the veneer be properly full well that the re-drier can lie dependentupon to make the final result absolutely certain. Action of Glue in a Wood Joint This greatly enlarged section through a gluedjoint of plywood illustrates a fact, not generally un-derstood, that the glue uniting two wood surfacesdoes not lie in a smooth sheet but enters the cellcavities through the open ends on the cut surfaceand clinches the joint by means of millions of tinybarbs and anchors. The arrow indicates the point. How glue penetrates into wood pores at which the glue entered the pore to the left of theglue line. The glue-filled pores near the glue lineon the right all open on the cut surface at some pointand were filltd in the same manner, as little or nopenetration takes place through the cell walls. \ iaScosity and pressure must be adjusted to suit the char-acter and number of cells and pores in differentkinds of woods to obtain the strongest joint. Thephotograph was furnished by the U. S. ForestService. Canadian Woodworker and Furniture Manufacturer 91 Walnut, Quartered White Oakand Mahogany Veneersand Lumber Prompt Delivery LONG-KNIGHT LUMBER COMPANY INDIANAPOLIS, IND. VENEERED TABLE TOPS WALNUT - MAHOGANY - QUARTERED OAK GOOD Plywood is only producedby using first class materials;properly constructed, by care-ful and skilled panels are made in this in Maple, Birch, Plain Oak,Qrt. Oak, Walnut, Mahogany, Gum,etc., in standard sizes or
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectfurnitu, bookyear1922
