Show SAWS toine fact them which aro not generally knonk the material entering inlo alio manufacture of saws must of necessity bo 0 a peculiar character besides which alio llio maker of alio steel as well as the saw maker should know nearly alio rate 0 speed at which the saw is to bo run fur a saw running at a acry high of speed needs of necessity to bo of different temperature as regards alic center when a disk of steel la made into a saw the maker can hammer it so as a s to leave cither a or hard center A saw having a soft center will if a person lakes leold of tho edge and agarla it vibrating whilo if it has A hard center one part will not shako any more than again a saw with a hard center if driven at a high rate of speed will not cut kofl straight for tho simple reason the center being hard it will not adapt itself to alio llio different degrees of haidn of the timber and will not resist alio influence of unequal ati nass existing between tho sawed board on ono sido and the solid log on alio other if however a saw has a soft center and is given a motion of revolutions a minute or more the force straining at tho center still eus alic saw aud keeps alio edge steady people ordinal ily seem to think that cheru lias been iho samo straining after ornamental acl m SAWS so odd aro alio of alio hut with saws wo again that tho study of alio llio manufacturer lias been solely to the greatest possible strength aud cutting power commensurate alic size and velocity of the saw in conclusion it will bo noticed that omo fomo f of tho vertical saws have dull teeth alternating with alio sharp ones by being made the dull teeth do not reach out quite so far sis the sharp ones and aro placed there for tho purpose of keeping ahn sawdust saw dust out with the cutting or truo teeth of tho land gazette |