A drill hole goes out of centre due to.......................
a) Centre punch mark not being large enough to give proper seat to the chisel edge drill
b) Inproper champing of work piece
c) Work piece having blow holes
d) Any one of the above
a) Centre punch mark not being large enough to give proper seat to the chisel edge drill
b) Inproper champing of work piece
c) Work piece having blow holes
d) Any one of the above
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