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Old 06-11-2009, 06:34 PM   #1
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How can you identify a drill bit or saw blade by looking at it?


Anyone know of any way to identify a blade simply by looking at it to see its intended use?

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Old 06-11-2009, 07:38 PM   #2
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How can you identify a drill bit or saw blade by looking at it?


yes...simply by looking at it.... usually works for me, what exactly are you referring to?
steel-vs.-wood-vs.concrete drill bits, or what?
plywood-vs.-crosscut-vs.-ripping blades?

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Old 06-11-2009, 07:59 PM   #3
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How can you identify a drill bit or saw blade by looking at it?


saw blades are used for different tasks based on the number of teeth and the angle they are set. Very easy to tell which is for what purpose when you know how they cut.
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Old 06-11-2009, 09:45 PM   #4
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How can you identify a drill bit or saw blade by looking at it?


post removed
Gomer said:
duhhhhhhhhhhhhhhh
Exactly!
Ron

Last edited by Ron6519; 06-13-2009 at 12:59 PM. Reason: unnecessary and inflammatory post removed
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Old 06-13-2009, 12:10 PM   #5
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How can you identify a drill bit or saw blade by looking at it?


What i meant is how do you thre material it is meant for by looking at it?
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Old 06-13-2009, 12:11 PM   #6
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How can you identify a drill bit or saw blade by looking at it?


duhhhhhhhhhhhhhhh... i meant the material it is meant for!
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Old 06-13-2009, 07:45 PM   #7
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How can you identify a drill bit or saw blade by looking at it?


bits for concrete often have a carbide "chip" in the end, this chip or chips is the widest part of the bit, and the flutes have a hi-low pattern, like a tapcon screw. wood bits often have a tight spiral on the very tip, and a wide flute pattern that starts tight and gets wider. steel bits usually have a split tip, with a consistent flute from end to end.

these are general guidelines, but there are many exceptions. it is easy to figure out as you get used to it

the basic guideline for sawblades is the more teeth per inch, the harder the material it is meant for.
think of the coarse teeth on a hand crosscut saw meant for wood, versus the hundreds of fine little teeth on a hacksaw blade used on steel. Plenty of exceptions, but this is a good rule to start with


Last edited by Mr Chips; 06-13-2009 at 07:50 PM.
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