Dressing out a drill bit
Drillers always have a minimum of two drills bits on the go, so while one is engaged in drilling the other can be dressed out.
At the forge they heat the bit and shape it out to the width of the hole. Not only is it important to know how to correctly shape the bit to drill through different types of rock, but it is also necessary to temper the steel so it isn’t so hard it will break or so soft it will drill the hole bigger at the bottom than at the top. The steel is tempered by heating it below its 2,500 degrees melting point, then cooling it to increase its strength and hardness.
Reviews
Get Your Copy Today!
The Salt Man is now available from:
Goderich
Fincher’s
16 Courthouse Square
Goderich, On. N7A 1M8Sarnia
The Book Keeper
500 Exmouth Street
Sarnia, On. N7T 5P4Petrolia
Petrolia Mercantile & Tea419 Petrolia Line, Petrolia, On N0N 1G0Kincardine
Fincher’s816 Queen Street, Kincardine, On N2Z 2Y2LondonOxford Book Shop Ltd.262 Picadilly StreetLondon, On N6A 1S4Tuckey Home Hardware136 Wortley RoadLondon, On N6C 3P5Bookmarks the Spot
22541 Adelaide Rd
Mount Brydges, ON N0L 1W0Bayfield
The Village BookShop
24 Main Street North
Bayfield, Ontario N0M 1G0
Contact Anne Kay
If you have questions about the book or would like to share something with Anne Kay relating to her writing, please complete our contact form.