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Old 02-24-2004, 12:01 PM
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hole saw

I need to make a 2" hole in my firewall for my steering column, anybody recommend a good brand of hole saw to use. Ive tried 2 cheap ones now and all im doing is flattening the teeth on the saw blade.

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Old 02-24-2004, 12:41 PM
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You need a hole saw for metal, the ones you have been using are for wood.
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Old 02-24-2004, 01:25 PM
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A really good metal drilling hole saw will set you back a bit. Try an industrial tool rental store or plumbing supply outlet for a loaner/rental. If you know someone in the plumbing trades, you might get them to lend you the tool, or drill it for you.
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Old 02-24-2004, 03:21 PM
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Go to Home Depot. They have bi-metal hole saws in the tool department. The white ones, can't remember the brand right now I'm at work. Not to bad on the price, 20 something I think. I've used a couple different sizes of them on my truck and they work pretty good. Put a couple of holes through the frame rails that I needed and a hole for the fuel tank filler hose.

David
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Old 02-24-2004, 04:33 PM
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The ones I use are from ACE Hardware. They are not cheap, but last pretty well. Be careful....if they bite and you are not ready it will snap your wrist pretty hard so hold on.

Chris
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Old 02-24-2004, 05:35 PM
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One thing that sometimes helps in terms of the "bite" is to run the drill in reverse. I've never tried it with a hole saw but it works with skil saw blades sometimes. You'll have to make the pilot hole first (which you've probably already done). After you've cut part way running in the forward position just switch to reverse for when the teeth cut through to the other side. That is when the bite usually occurs.

If it actually works, post on the result. If it doesn't work - pretend like I never brought it up.

Dewey
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Old 02-24-2004, 07:15 PM
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The bi-metal hole saws work great. Use a 1/2" drill or one with variable speed that will rul slow. That will help keep from burning up the saw. Running thing in reverse will ruin it in short time. If you want to use it for cutting plastic running in reverse will help prevent splintering.
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Old 02-24-2004, 09:53 PM
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Thanks for the clarification on running in reverse adtkart. I know it works under some conditions for some materials. My bad.
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Old 02-24-2004, 11:37 PM
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picked a new one up at home depot, Bi metal with the arbor for $13.00. worked great THANKS guys
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Old 02-25-2004, 11:21 AM
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Heck yeah! Bi-metal is the key. In the aviation industry we have hole saws with wider teeth that are awesome. They are for use with very thin aluminum sheet. (less than .030) It will make a perfect hole without snagging or tearing.
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