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Old 07-26-2012, 01:42 AM   #1
BradleyBrew
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Nov 2010
Parris Island, USA
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Hey everyone, trying to drill out 1 1/4" holes for my heating elements. My new step drill bit is toast. I was even using cutting oil. Any help? or advise on what to use??

 
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Old 07-26-2012, 02:01 AM   #2
stlbeer
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Get a new bit or use something like a Dremel with a grinding bit.
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Old 07-26-2012, 02:31 AM   #3
JohnnyGunn
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Oct 2010
Edmonton, Alberta
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I know it's too late now, but I used a 1 1/4" hole saw with cutting oil on my keggles. Turned out fine.

As far as what to do next, how big is the hole you have right now?

 
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Old 07-26-2012, 03:05 AM   #4
BradleyBrew
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3/4"

 
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Old 07-26-2012, 02:13 PM   #5
dutchb
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milan, pa
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I have an air grinder that I used to grind the metal down with just to thin it out so the step bit didnt have to work so hard.

 
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Old 07-26-2012, 04:38 PM   #6
BradleyBrew
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thanks, called my local homebrew shop... they are going to plasma cut the hole out and tig weld the large nut I got from bargain fittings for my elements. I guess I will just screw them in to the welded nut. Sound like it would work??

 
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Old 07-26-2012, 04:49 PM   #7
stlbeer
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That should work just fine.
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Old 07-26-2012, 04:51 PM   #8
notkevinc
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Feb 2012
Rochester, MN
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Might be slightly cheaper to get a punch set from harbor freight tools. They have a 20$(?) punch set with a punch slightly larger than 1 1/4.

Quality is bad. My small punch broke. But the large one held up to one use.

That being said. Welding the nut on sounds like a much better solution.

 
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Old 07-26-2012, 04:58 PM   #9
JohnnyGunn
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Oct 2010
Edmonton, Alberta
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I'd go welded...because my solution would have been to buy another step bit that goes to 1 1/4" and keep going with lots of breaks for cutting oil.

 
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Old 07-26-2012, 05:03 PM   #10
Double_D
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Have you thought about a radio punch? This cost more than the one I got here in town but it makes the best holes. http://www.amazon.com/Greenlee-730BB...punch+knockout

 
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