Hardwood The timber from broad-leaved trees. Generally, hardwood trees have a less cylindrical trunk than Coniferous (Softwood) trees and a wide rounded crown that contains heavy branches (think of Oak, Beech and Ash trees). The seeds from a hardwood tree have a covering (e.g. acorns and stoned fruits) and they are also mainly deciduous (they shed their leaves in winter). Hardwood differs from Softwood in its cell structure, which contains three types of cell &ndash fibres, parenchyma and vessels or pores. Softwood, by comparison, contains only two types of cell. The Fibres are the main structural tissue of the wood, giving its mechanical strength. The Parenchyma perform the same function as in softwood &ndash they store the food. The Vessels are the sap-conducting cells. The name Hardwood is no indication as to how hard the timber actually is think of Balsa, which is considered a hardwood but is less dense and a lot softer than many softwoods.
Haunch (Right) A small projection left by reducing the width of a Tenon. Usually found when the joint is on the end of a piece of framework and mainly used in door construction. So let us take a look at best door joinery names with 30 pictures below.
1. Window Joinery Details & Weather Seals Diagram""sc""st
Head The top member of a frame. Also a machine cutter block.