WES Evaluation for CANADA IMMIGRATION. By cnugadu, December 26, 2017 in Discussions
List of timber framing tools. Illustration of carpentry (charpente) in the French EncyclopÃ©die showing hewing, mortising, pit sawing on trestles. Tools include dividers, axes, chisel and mallet, beam cart, pit saw, trestles, and bisaigue . The men talking may be holding a story pole and rule (or walking cane). Shear legs are hoisting a timber. Below, the sticks on the log are winding sticks used to align the ends of a timber.
When people hear the word machining they generally think of machines that utilize mechanical energy to remove material from the work piece. Milling machines, saws and lathes are some of the most common machines using mechanical energy to remove material. The tool makes contact with the work piece and the resulting shear causes the material to flow over the tool. All traditional forms of metal cutting use shear as the primary method of material removal. However, there are other sources of energy at work. Chemical energy has a significant effect on every turning operation. Think of the effect that different kinds of coolants have on the cutting action of a tool. Some amount of chemical energy is being used in most metal cutting operations. All forms of manufacturing use more than one type of energy.