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Tools and Garages This is a place to share about the tools and workspaces used to craft your latest masterpiece.

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  #1  
Old October 17th, 2020, 19:49
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Hole enlarging bits

What would you recommend?

I have a metal about 2 inches deep that have a 5/8" hole. I would like to make the hole about 11/16 inch. I do not like the idea of using a regular twist bit in a hand drill if something better is available.
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  #2  
Old October 18th, 2020, 07:36
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Re: Hole enlarging bits

A reamer in a mill would be better. And it is available for a price. But I think the price will tell you to go get your hand drill and twist bit.
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  #3  
Old October 18th, 2020, 19:59
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Re: Hole enlarging bits

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Originally Posted by Anak View Post
A reamer in a mill would be better. And it is available for a price. But I think the price will tell you to go get your hand drill and twist bit.
I seem to remember a tool known as a reamer many years ago used when installing king pin bushings in those British solid axle vehicles back home. They were turned by hand.
I will try searching using 'Reamer'.
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1996 XJ; 4.0L; AW4; NP231; SYE; D30 and D44; ECTED; 4.10 gears; 30X9.5 -15 BFG/AT/KO; 3" lift; Rusty's LCA; JKS ADJ UCA; Kevins ADJ Track bar; Drawtite Front Receiver; Dual Electric Fans; Dual Battaries.
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  #4  
Old October 19th, 2020, 20:57
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Re: Hole enlarging bits

There probably are some that are designed to be turned by hand. Look for square drive shanks, much like a tap.

Reamers produce a nicer rounder hole than a twist drill.
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  #5  
Old October 20th, 2020, 10:12
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Re: Hole enlarging bits

Can you get to both sides with a hand-drill? Seems like a unibit (step drill) might work well, it does a dandy job enlarging holes on thinner stuff.

Probably depends on how long a unibit you can find...
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  #6  
Old October 20th, 2020, 20:11
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Re: Hole enlarging bits

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Originally Posted by Rob Mayercik View Post
Can you get to both sides with a hand-drill? Seems like a unibit (step drill) might work well, it does a dandy job enlarging holes on thinner stuff.

Probably depends on how long a unibit you can find...
It is more like a tube/pipe that is about 1.5 inches long. A step drill would not quite do the job.

The reamers I see online are quite expensive,...for most likely for a single use. Well, there are 4 holes,...that's it.
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1996 XJ; 4.0L; AW4; NP231; SYE; D30 and D44; ECTED; 4.10 gears; 30X9.5 -15 BFG/AT/KO; 3" lift; Rusty's LCA; JKS ADJ UCA; Kevins ADJ Track bar; Drawtite Front Receiver; Dual Electric Fans; Dual Battaries.
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  #7  
Old October 22nd, 2020, 07:11
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Re: Hole enlarging bits

Price is indeed the issue with reamers.

The few I have were picked up at an industrial surplus shop.

They are a pleasure to use.
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  #8  
Old November 6th, 2020, 03:23
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Re: Hole enlarging bits

I think, you need a hole saw!
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  #9  
Old November 7th, 2020, 11:27
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Re: Hole enlarging bits

Use a 21/32 bit, then the 11/16 bit. Enlarging holes I also prefer to grind the bits to more of a point. A variable speed hand drill helps when you can't do it on a drill press.
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  #10  
Old November 9th, 2020, 08:43
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Re: Hole enlarging bits

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I think, you need a hole saw!
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  #11  
Old November 9th, 2020, 16:33
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Re: Hole enlarging bits

Quote:
Originally Posted by Anak View Post
Price is indeed the issue with reamers.

The few I have were picked up at an industrial surplus shop.

They are a pleasure to use.
Yes indeed, price was/is a a concern especially since it could be a one time use item. I spent several ours searching the web for a good price to no avail.

Quote:
Originally Posted by Bent View Post
Use a 21/32 bit, then the 11/16 bit. Enlarging holes I also prefer to grind the bits to more of a point. A variable speed hand drill helps when you can't do it on a drill press.
I bought myself an 11/16th bit and went at it with a 1/2 inch hand drill, plenty of patience and plenty of lube. The results were better than I expected.

Thanks all for your suggestions.
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1996 XJ; 4.0L; AW4; NP231; SYE; D30 and D44; ECTED; 4.10 gears; 30X9.5 -15 BFG/AT/KO; 3" lift; Rusty's LCA; JKS ADJ UCA; Kevins ADJ Track bar; Drawtite Front Receiver; Dual Electric Fans; Dual Battaries.
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