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Old 03-11-2014, 01:45 PM   #1
randomwalk101
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Drilling 8 holes in thick metal

Anyone knows of a good/cheap machine shop around to help me drill 8 holes (about 1" hole) in 1/4" thick sheet metal?

I can prob do it on a hand drill with a uni-bit but that prob going to kill my hands.
Thanks
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Old 03-11-2014, 01:47 PM   #2
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How big is the sheet? You say about 1", do you have the bit? Location?
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Old 03-11-2014, 02:07 PM   #3
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1/4 metal isnt hard to drill through, start with a small bit and work your way up gradually .
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Old 03-11-2014, 02:14 PM   #4
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Use a center punch to mark your hole and a stepped bit...
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Old 03-11-2014, 02:28 PM   #5
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Go to Harbor freight and spend 70 bucks on a drill press. Then you have one for next time!
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Old 03-11-2014, 02:35 PM   #6
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Drilling 8 holes in thick metal

You need a hog bit
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Old 03-11-2014, 02:41 PM   #7
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hog bits are expensive. I used to get them from the tool room for free. lol Step bit is cheap
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Old 03-11-2014, 04:01 PM   #8
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You need hog bits let me know.....They cost a 6 pack each.
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Old 03-11-2014, 04:01 PM   #9
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Old 03-11-2014, 04:07 PM   #10
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Quote:
Originally Posted by TardinLA View Post
You need hog bits let me know.....They cost a 6 pack each.
Nothing is gonna do that job like a hog bit. I used to drill holes in structural steel all the time with them. 1/2'' thick steel holes like a hot knife through butter.

Take this guy up on his offer
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Old 03-11-2014, 05:49 PM   #11
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Thanks guy. It's the front and rear truck bumper. It's the aftermarket bumper so it's a lot thicker than stock. The holes are needed for the sensors.
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Old 03-11-2014, 06:17 PM   #12
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Quote:
Originally Posted by bluewave18 View Post
You need a hog bit
hazy5yta

i found it on amazon...gosh super expensive.
Also if I have this, how do I attach it to my drill to cut?



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Old 03-11-2014, 06:34 PM   #13
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You can get them with a drill shank
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Old 03-11-2014, 06:44 PM   #14
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Is there any machine shop that has all the tools that will drill for a fee?
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Old 03-11-2014, 07:05 PM   #15
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User is banned

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Old 03-11-2014, 07:11 PM   #16
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Quote:
Originally Posted by randomwalk101 View Post
Thanks guy. It's the front and rear truck bumper. It's the aftermarket bumper so it's a lot thicker than stock. The holes are needed for the sensors.
Sounds like stainless steel, prolly 304. If so, you can forget about drilling with handrill. It willwork harden and chew up bits faster than you can buy them. Are u sure it's 1/4in? That's pretty thick for bumper.
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Old 03-11-2014, 07:18 PM   #17
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They're not stainless. Just reg steel that has been powdercoated black.
Here are some pic of the same bumper (but not my truck though). Yeah they're about 1/4" thick.

46C085E8 304F 4F6D 9276 ABDBB2F7BD9D

DE1DACBE 54A7 415F A076 0AEB5E4696EF


E59F4079 F3C2 4261 A1C4 AE2BDC542EB7
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Old 03-11-2014, 07:40 PM   #18
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Okay, that's better. If it's that thick, then it's not likely to be high strength steel. Prolly just mild steel, which you can almost cut with a good bimetallic holesaw, albeit it very slowly and lots of cutting fluid to cool the bit. 8 of them will take you a while. If this isfor backup sensors, there are usually mounting brackets you can get to mount them under the bumpers so you don't have to drill.

http://www.rostra.com/backzone-plus-...ra.php#gallery

You might try finding a shop that has water cut or laser cut equipment. Liable to get expensive. Or find somebody that has a magnetic drill press. As it would be tough to jig something this large to even a large drill press or mill.
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Old 03-11-2014, 08:13 PM   #19
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Quote:
i found it on amazon...gosh super expensive.
Also if I have this, how do I attach it to my drill to cut?
Did you miss this?

Quote:
TardinLA You need hog bits let me know.....They cost a 6 pack each.
See post #8
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Old 03-11-2014, 09:13 PM   #20
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Take it over to Glen at Cutten Customs. They are located off of Cutten road. I have had them work on several of my vehicles. Had them cut some holes and do some welding. They hang those off road bumpers all the time.

http://www.cuttencustoms.com
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