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05-21-2010, 05:01 PM
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#1 (permalink) |
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Alternative to special big drill bits
Here's an alternative to buying hard to find drill bits. It's called a Boring Head. They are used primarily in milling machines but are quite at home in a lathe tailstock too.
First you'd drill a hole smaller than what you need, then mount the boring head and adjust the bit so that it just skims the inside of the hole you drilled. Make a note of the setting on the dial and measure the diameter of the skimmed hole. Now just adjust the bit with the dial graduations till your kit tube fits perfectly. This set is is nice because it came with various accessories. I'll check the UK price from where I got this one, but I'm positive that you guys can get them cheaper. Possibly for the same price as 2 or 3 big drill bits.  Just checked...£70 incl tax and UK delivery. http://www.chronos.ltd.uk/acatalog/C..._Heads_89.html Little Machine Shop has them for much cheaper...http://littlemachineshop.com/product...Product+Search Just pick and choose the head, morse taper and bit you want.
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Last edited by skiprat; 05-21-2010 at 05:10 PM. |
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05-21-2010, 05:36 PM
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#3 (permalink) | |
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Quote:
That's the traditional way on a metal lathe, but like this it can be used on a wood lathe too.... Here are tha pro's I can think of... Can bore any size hole. Blank doesn't get hot. No blow out on the back of the blank. Easier to sharpen the bits. The only con I can think of is the limit of depth you can bore. You couldn't bore a blank for a long clicker for example. Unless you bought a length of tool rod and ground your own, which is dead easy anyway 
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05-21-2010, 05:57 PM
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#4 (permalink) |
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BANNED
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well wouldnt that be the same issue with a regular length bit anyway? what is the smallest / biggest hole size something like that could do?
No matter far as i am concerned... This tool right here is AWESOME! Definately on my list... Thanks for sharing!! Last edited by RAdams; 05-21-2010 at 06:56 PM. |
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