1
" Mama, Mama, help me get homeI'm out in the woods, I am out on my own.I found me a werewolf, a nasty old muttIt showed me its teeth and went straight for my gut.Mama, Mama, help me get homeI'm out in the woods, I am out on my own.I was stopped by a vampire, a rotting old wreckIt showed me its teeth and went straight for my neck.Mama, Mama, put me to bedI won't make it home, I'm already half-dead.I met an Invalid, and fell for his artHe showed me his smile, and went straight for my heart.-From " A Child's Walk Home," Nursery Rhymes and Folk Tales "
3
" And then came the pain. First in her leg, as if something had sunk its teeth into it. A huge beast, a dog, maybe. It locked its jaws onto her limb and tore at the muscles with its teeth. She screamed, that was all she could do, scream. She could not describe the feeling of having her body ripped apart. She remembered her father's despair, his face as he leaned over her bed, and his words: What is it, tell me, what is it? As she writhed in pain, soaked in her own sweat, Don Guillermo, her kind, good father, waited for her to tell him. For an explanation. A meaningful verbalization of this horror, so that he could understand what was happening to his child. Otherwise, how could he help her? Because her frenzied cries were not enough. Pain needs to be articulated, communicated. It needs a kind of dialogue. It needs words. But only screams and shrieks of pain escaped from the child's lips. "
― Slavenka Drakulić , Frida's Bed
8
" The Beaver is an amphibious creature: by day it lives hidden in rivers, but at night it roams the land, feeding itself with anything that it can find. Now it understands the reason why hunters come after it with such eagerness and impetuosity, and it puts down its head and with its teeth cuts off its testicles and throws them in their path, as a prudent man who, falling into the hands of robbers, sacrifices all that he is carrying, to save his life, and forfeits his possessions by way of ransom. If however it has already saved its life by self-castration and is again pursued, then it stands up and reveals that it offers no ground for their eager pursuit, and releases the hunters from all further exertions, for they esteem its flesh less. Often however Beavers with testicles intact, after escaping as far away as possible, have drawn in the coveted part, and with great skill and ingenuity tricked their pursuers, pretending that they no longer possessed what they were keeping in concealment. "
― , Historical Miscellany (Loeb Classical Library, #486)
9
" Broaching is a precise machining process in metalworking domain which uses a toothed tool called broach to cut materials into a predetermined shape. Broaching works best for odd shapes where precision machining is needed and hence finds wide application in a number of industry in India and worldwide.
Broach resembles a saw to certain extent but unlike a saw, its teeth become larger in size across its length. A broach gives shapes by roughing or removing the material, semi finishing and then by imparting the ultimate finishing. Round or odd shapes, for both internal and external surfaces, can be conveniently formed by broaching. This multi edge tool can shape any metal or metallic alloy but works best on softer materials like plastic, wood, bronze, aluminum, etc.
Resharpening of the tool
The broach that imparts shape to many work pieces can work properly only when the size and shape of its teeth are perfect. With time and usage, the teeth tend to lose its sharpness and become blunt. Using a dull broach may lead to permanent damage of its teeth. To enhance the broach life and minimize the tooling expense, it needs to be re-sharpened on time.
When to opt for resharpening
When broaching produce roughly shaped work pieces, it is definitely time for re-sharpening. However, with a little bit of watchfulness, one can even get it sharpened before it delivers poor finish or tearing. Some of the other conditions when this toothed tool will require re-sharpening are:
• Excessive hydraulic press pressure required to run the broach
• Nicks and scratches on the teeth making it dull
• Broach starts drifting
• Cutting edges show signs of wear
• Chattering occurs while broaching
Re-sharpening requires high precision. Removing excessive material from the teeth will adversely affect its longevity. Only proper sharpening will ensure time efficiency and high quality output. Teeth welding, grinding of gullets and teeth crest, reshaping teeth to proper taper are some of the methods used in re-sharpening.
Broaching, once used for machining only internal keyways, is now used for machining a plethora of shapes and surfaces for high quantity of work pieces. Broaching requires less tools than most of the other machining process and saves considerable amount of output time and hence favoured for high volume production irrespective of its high cost. In India, broaching finds wide application in the automobile industry. Therefore, a large number of players are foraying into the broach manufacturing industry on a regular basis. "
― Ankur sood