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Author Topic: countersink bits  (Read 6585 times)

dlbarr

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countersink bits
« on: July 20, 2015, 06:06:48 AM »
Call me slow & uneducated but where do I find bits to cut countersinks in a steel buttplate? The only ones I find at such places as Lowe's/Home Depot etc etc are for wood...

Thanks.
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Offline Sidelock

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Re: countersink bits
« Reply #1 on: July 20, 2015, 06:18:55 AM »
Two good location on the web for metal working tools  - Enco and McMaster Carr
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Offline Mark Elliott

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Re: countersink bits
« Reply #2 on: July 20, 2015, 07:29:25 AM »
I order all that stuff from MSC.    It's pretty much the same as ENCO and McMaster Carr.   MSC does cater to small businesses.   I live ouside Richmond,VA and MSC headquarters and main warehouse is in Harrisburg,PA.   I get just about everything in stock the next day UPS ground.   I get drill bits, countersinks, counter-bores, taps, dies, etc.... from MSC.  I just order the piece when I need it and it is on my doorstep the next afternoon.    Easy peasy.   
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Offline Nordnecker

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Re: countersink bits
« Reply #3 on: July 20, 2015, 01:53:15 PM »
Odd as it might seem, the ones I have that have several cutting edges that are supposedly made for metal don't cut metal as well as the one I have with one cutting edge that's made for wood. ???
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Offline Pete G.

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Re: countersink bits
« Reply #4 on: July 20, 2015, 04:35:58 PM »
Be careful what you buy. Countersinks with multiple cutters tend to chatter in metal.
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Offline JBJ

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Re: countersink bits
« Reply #5 on: July 20, 2015, 04:40:23 PM »
I suggest you consider fluteless counter sinks. They are a pleasure to use and chatter is nonexistent.  Be sure and avoid the Chinese brands as they are not ground correctly - points are often not centered.
J.B.
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Offline Acer Saccharum

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Re: countersink bits
« Reply #6 on: July 20, 2015, 06:45:06 PM »
These can be gotten through McMaster Carr or MSC and the like:

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Offline P.W.Berkuta

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Re: countersink bits
« Reply #7 on: July 20, 2015, 06:49:05 PM »
Quote from: Dave on July 20, 2015, 06:06:48 AM
Call me slow & uneducated but where do I find bits to cut countersinks in a steel buttplate? The only ones I find at such places as Lowe's/Home Depot etc etc are for wood...

Thanks.
I buy most of my stuff here <http://www.toolsavings.com>  Their prices and selection is very good - you can buy import or USA your choise I've purchased both and not had a problem with either. I just purchased 4 of each number drills in cobalt from size #60 to #43 and some reamers the order was processed & shipped within a few days. I feel they are better than ENCO or MSC for selection or price ;).
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dlbarr

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Re: countersink bits
« Reply #8 on: July 20, 2015, 10:10:16 PM »
Quote from: Nordnecker on July 20, 2015, 01:53:15 PM
Odd as it might seem, the ones I have that have several cutting edges that are supposedly made for metal don't cut metal as well as the one I have with one cutting edge that's made for wood. ???

I can attest to the fact that the "wood" countersinks don't work on metal....at least not here in my shop.  ;D
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docone

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Re: countersink bits
« Reply #9 on: July 20, 2015, 10:44:47 PM »
I like TOW,
http://www.trackofthewolf.com/List/Item.aspx/1028/1
They have always been good.
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Offline Scota4570

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Re: countersink bits
« Reply #10 on: July 20, 2015, 10:45:22 PM »
I make half reamers of the profile I want.  
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Offline Bob Roller

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Re: countersink bits
« Reply #11 on: July 21, 2015, 12:31:48 AM »
Quote from: Dave on July 20, 2015, 10:10:16 PM
Quote from: Nordnecker on July 20, 2015, 01:53:15 PM
Odd as it might seem, the ones I have that have several cutting edges that are supposedly made for metal don't cut metal as well as the one I have with one cutting edge that's made for wood. ???

I can attest to the fact that the "wood" countersinks don't work on metal....at least not here in my shop.  ;D

My opinion also. Wood tools for wood,metal tools for metal,carbide if the metal is hard or stubborn.

Bob Roller
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Offline valongrifles

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Re: countersink bits
« Reply #12 on: July 21, 2015, 05:09:44 AM »
Just remember, the angle is different for metal use vs. wood use.
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dlbarr

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Re: countersink bits
« Reply #13 on: July 21, 2015, 07:56:06 AM »
Quote from: valongrifles on July 21, 2015, 05:09:44 AM
Just remember, the angle is different for metal use vs. wood use.

Yes, I was thinking of that also. This is my first build, I am inordinately slow and find I know very little of what should be common knowledge. That said, what is the angle of those big buttplate screws?
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eddillon

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Re: countersink bits
« Reply #14 on: July 21, 2015, 08:40:03 AM »
I have a cheap Craftsman countersink.  A layer of paper towel between workpiece and countersink eliminates chatter.
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Offline John Archer

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Re: countersink bits
« Reply #15 on: July 21, 2015, 10:10:56 PM »
Slow speed....and handhold the workpiece if your drill press has a lot of slop. This will give you nice smooth countersinks.

John.
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