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Old 07-10-2019, 08:06 PM   #1
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Carbide hole saw best when running wire?


I have a new Milwaukee hole set but drilling holes through studs, joists, especially those that are doubled is frustrating. I have 2 strong 1/2" drills that have guts, one is especially as it's low gear reduction and heavy, you can just hear the strength of the gears turning. When I pull the hole saw out, it's hot.

Can I expect faster drilling with less heat from carbide?

Most of my drilling I use 3/4".
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Old 07-10-2019, 08:43 PM   #2
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Re: Carbide hole saw best when running wire?


I prefer auger bits.
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Old 07-10-2019, 09:22 PM   #3
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Re: Carbide hole saw best when running wire?


Or even speed bits would be better than a hole saw.
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Old 07-10-2019, 09:48 PM   #4
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Re: Carbide hole saw best when running wire?


I like the Forstner style bits. The center auger removes the wood and the outside bold saw cuts the whole size. I use a right angle drill to get between stud bays. The auger style work fine as well but you may need shorter bits than what Code matters pictured. There are places where those long bits are needed though.

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Old 07-10-2019, 10:12 PM   #5
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Re: Carbide hole saw best when running wire?


This is the best 3/4" bit I've found.
BOSCH-NKST12
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Old 07-11-2019, 05:55 AM   #6
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Re: Carbide hole saw best when running wire?


If this is what you mean by "hole saw", you will be drilling all day. Name:  IMG_0450.JPG
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Old 07-11-2019, 06:13 AM   #7
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Re: Carbide hole saw best when running wire?


These are terrific.



I did some speed testing and I was popping holes thru 2x4's in about five to ten seconds each. Yes, I'm an animal when I get going on a project.



https://www.amazon.com/IRWIN-Tools-S...gateway&sr=8-1
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Old 07-11-2019, 06:29 AM   #8
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Re: Carbide hole saw best when running wire?


Quote:
Originally Posted by 123pugsy View Post
These are terrific.



I did some speed testing and I was popping holes thru 2x4's in about five to ten seconds each. Yes, I'm an animal when I get going on a project.



https://www.amazon.com/IRWIN-Tools-S...gateway&sr=8-1
Those bits are fine, until you hit a nail.
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Old 07-11-2019, 06:40 AM   #9
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Re: Carbide hole saw best when running wire?


Quote:
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Those bits are fine, until you hit a nail.

Why, what happens when you hit a nail? I guess I missed every one when I built my house.
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Old 07-11-2019, 06:46 AM   #10
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Re: Carbide hole saw best when running wire?


Quote:
Originally Posted by 123pugsy View Post
Why, what happens when you hit a nail? I guess I missed every one when I built my house.
You must be lucky. One nail and the flutes are gone. Just my experience. Your results may vary.
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Old 07-11-2019, 06:48 AM   #11
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Re: Carbide hole saw best when running wire?


Quote:
Originally Posted by Let it Snow View Post
This is the best 3/4" bit I've found.
BOSCH-NKST12
Best I've found as well although I prefer 7/8".
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Old 07-11-2019, 04:48 PM   #12
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Re: Carbide hole saw best when running wire?


Today I used a flat spade bit instead of the bike saw. I did 2 studs, worked great, fast. I may order the Bosch NKST-12 but or the Irwin Speedbor. Thank you for those two recommendations.
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Old 07-11-2019, 05:00 PM   #13
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Re: Carbide hole saw best when running wire?


Those Irwin speedbores often come on a great sale at blackfriday....I stock up on them with a couple of extra's they are so inexpensive.

(Guess I do hit some nails now and then.)
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Old 07-11-2019, 05:26 PM   #14
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Re: Carbide hole saw best when running wire?


I guess I was mistaken. I must have hit a whack of stuff. Funny thing is, in a cordless drill, these holes just popped thru at 3 seconds apiece, even in this beat up state.
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Old 07-11-2019, 06:09 PM   #15
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Re: Carbide hole saw best when running wire?


I mostly use inexpensive spade or paddle bits here. Mostly because of the high probability of hitting nails. These 2 flute spade bits are easy to sharpen on a bench grinder after you hit a nail.

Also, I normally run smaller holes, unless I know I will be running a boat load of cables thru it. 1/2 to 5/8 range.
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