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Tool Talk Discussion Forum

drillbits

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WvaJim

03-23-2007 17:45:55




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Well, after years of cheap HF drill bits breaking and buying one decent one here and there and never having what I need, and looking here on past threads, broke down and bought a 115 piece set of Norseman bits. Ordered them wednesday morning and they showed up today, UPS. Really nice looking set. Now gotta try em out.




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oldrustycars

03-26-2007 16:56:30




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 Re: drillbits in reply to WvaJim, 03-23-2007 17:45:55  
I own cheapo bits, as well as sets bought from Snap-On. The Drill Doctor is the best investment for anyone with lots of drill bits. I have the DD-750. I sharpened bits on a grinder for 30 years, but this thing makes them just like new.



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Henry E NC

03-26-2007 07:42:31




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 Re: drillbits in reply to WvaJim, 03-23-2007 17:45:55  
I spent many years working on boats of all sizes that have a lot of stainless steel on them and for most of those years I used cobalt bits. They are hard and retain sharpness for a long time. They only prolem is that they are somewhat brittle and therefore do not have mush bend. Most of current bits are 20 year old and hardle ever geet sharpeneed. I never buy anything than cobalt



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Chester

03-25-2007 11:18:32




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 Re: drillbits in reply to WvaJim, 03-23-2007 17:45:55  
Here in Canadian Tire land, they sell bits that are both GOOD and CHEAP. About 10/15 years back they had on sale (for $15), a metal index box with 29 bits from 1/6" to 1/2". I bought 6 sets of them, gave away a couple to friends and still have enough to last many more years. I just keep sharpening them on my swing through jig in conjunction with a 1 X 30" belt sander. Have used them in my drill presses and metal lathe and they are as just good as my expensive sets.

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IH2444

03-23-2007 19:30:37




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 Re: drillbits in reply to WvaJim, 03-23-2007 17:45:55  
You just never know about cheap bits, bought an elcheapo set of HF bits 1/2 to 1 inch. about $25 I think. Just finished drilling 12 3/4" holes in 1/2 inch plate, last hole cut just as good as the first one ;)

But yes generally chinese bits are junk.



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Midwest redneck

03-23-2007 17:59:29




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 Re: drillbits in reply to WvaJim, 03-23-2007 17:45:55  
Are the drill bits High Speed Steel. Or HSS on the bits? Cheap carbon steel bits are just about useless.



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WvaJim

03-23-2007 20:19:56




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 Re: drillbits in reply to Midwest redneck, 03-23-2007 17:59:29  
Its these:http://www.fairburyfastener.com/norseman.htm



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Midwest redneck

03-24-2007 04:24:11




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 Re: drillbits in reply to WvaJim, 03-23-2007 20:19:56  
If the bits Dont say HSS then they are not, most likely anyway. And they wouldnt be carbide either unless they say so. What did you pay for the bits? and What is the set size, Fractional? Number? Letter? Metric? Just a word of thought here, I have 2 sets of Number drills at work (all my own sets here) Each set is High speed steel and each set was $50. I also have a set of letter drills that are made by Cleveland twist drill HSS, $67 One set of metric drills HSS 3MM to 13MM Cleveland twist drill, $80 One set of Hanson HSS 1/2" to 1" drills $110 High Speed Steel drills are either H or M series tool steel some are O1 series tool steel, heat treated to withstand high hot tempuratures during drilling of Alum. Steel and even heat treated steel of less then 45Rc hardness. Read the Machinery handbook for any info you need on Drills, I am a toolmaker/machinist and use drills everyday for making fixtures, details. I hope this helps.

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