Proper tool for reaming steel?


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Old 04-11-11, 08:27 PM
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Proper tool for reaming steel?

I recently had a need to enlarge a hole I drilled in 3/16 steel. It required a lot of hand filing since I do not have a mill. I occasionally have a need for such a tool to ream holes.

I've seen "reamers" online, but some are tapered and some are "hand" reamers and I don't know what those are for and what the proper name is for what I need. What tool can I buy to put in my hand drill or drill press that is made for reaming?
 
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Old 04-12-11, 06:49 AM
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You want what is commonly called a "chucking" reamer. They come in different sizes, but keep in mind that they are really meant to expand a hole by about 5% max.
 
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Old 04-12-11, 09:08 AM
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We used to use step bits in the field. They ream anything.





Mike NJ
 
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Old 04-12-11, 10:26 AM
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If possible I would use a drill to enlarge a hole. Drills are much less expensive and are more commonly available. If you have your heart set on a reamer I like to use bridge reamers when doing it with a hand held drill. There is a taper for first several inches to help guide into the hole before you get to the straight flutes. Reamers intended for use in mills can really bite so if using them in a hand held drill I like to use a cordless drill that has a clutch.
 
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Old 04-12-11, 07:55 PM
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larger drill bit
 
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Old 04-12-11, 09:16 PM
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What size hole is it you needed to drill, and what was this for?
Any drill bit makes an oval shaped hole. The only time a reamers used is after a holes drilled the hole it needs to be perfectly round, not to make the hole bigger.
A tapered reamer is mostly used to remove the burr at the top of a drilled hole or the inside of tubing or pipe when you have cut off a piece of pipe with a pipe cutter.
 
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Old 04-16-11, 08:58 AM
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If you have to open up a hole, or one side of a hole to properly align it with another. Try these, pic is just an example, they come in different shapes and sizes, buy a name brand or they wear out quickly. I prefer Mac tools.
http://www.princessauto.com/componen...ct/8121352.jpg
 
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Old 04-18-11, 09:31 PM
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If possible I would use a drill to enlarge a hole.
Yes, of course a drill would be appropriate - for a round hole. I forgot to mention this particular hole I am referring to is a slot. So a regular twist drill would not work.

JungleJim, that is what I am looking for. What are they called?
 
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Old 04-18-11, 09:45 PM
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They are just rotary files. Do a search on the internet. There are many brands.

If thats what you need, a dremel tool will work, and most have many different attachments. Probably more accurate because of the high speed.

Mike NJ.
 
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Old 04-19-11, 08:43 PM
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carbide burr.

use the finer tooth burrs for steel etc. use the course burrs for aluminum.
 
 

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