CHAPTER XVII 



Sharpening Crucible Steel Shares 



/CRUCIBLE steel shares are made of one piece of steel. 

 ^^ They cannot be tempered so hard as soft center 

 steel because tempering makes them too brittle and 

 thus subject to easy breakage. 



Ground that sheds easily can be successfully plowed 

 with a crucible share. 



Crucible steel shares can be sharpened exactly the 

 same as soft center steel shares, or they can be treated 

 according to the old custom of pounding the share on 

 the reverse side. However, there is less danger of 

 misshaping the edge of the share if it is pounded on 

 the upper side. 



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