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Step 1
Select the proper drill bit for your project, taking into consideration the size of the hole you need to make.
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Step 2
Hood of the drill in an open position, with no teeth visible.If the hood of the drill is in a closed position, you will be able to see three teeth extending toward the center of the drill. Rotate the hood of the drill counter-clockwise until you no longer see these teeth.
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Step 3
Insert the drill bit into the hood and rotate it clockwise to secure the bit.












Comments
drillguy said
on 9/12/2009 Nice article - I found the best drill bits for hard materials at http://www.drillbitwarehouse.com