Posted by: pilotwingz on Oct-16-13 11:53 AM (EST)
..... when you use a spade , forstner or brad point you never drill a pilot hole , and never increase the bore size in succession .
Although it can be done (by those who are experts at fixing their mistakes) , it is a nasty , dangerous and improper method that can easily tear up the material you are boring through .
With those bits it's a one time bore at the correct size desired .
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