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Thread: Boring attachment
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9th January 2009, 10:26 PM #1
Boring attachment
anyone had a go at making a boring attachment (sorry correct name escapes me atm) for boring large holes (larger than common drill sizes anyway) in a mill / drill.
I came a cross a detailed description sometime ago, but for the life of me can't seem to find it knowLathe - Hafco AL320G
Mill/Drill - Toolex RF31
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9th January 2009, 11:00 PM #2
Like this one
http://homepage3.nifty.com/amigos/bo...ing_head-e.htm
Kev."Outside of a dog a book is man's best friend ,inside a dog it's too dark to read"
Groucho Marx
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10th January 2009, 07:53 AM #3
yes thats what I'm after.
pretty complex design though, reckon I'd struggle with the indexing etx and numbering.Lathe - Hafco AL320G
Mill/Drill - Toolex RF31
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10th January 2009, 01:39 PM #4
FWIW I got mine from ebay cheaper than trying to make it but then I'm a hobbiest not a F&T.
A guy called Len??? (a few numbers) is a toolmaker in Vic and sell them in various sizes
Worth a look I reckon. Good After sales rep too....I know I needed some
PeteWhat this country needs are more unemployed politicians.
Edward Langley, Artist (1928-1995)
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10th January 2009, 01:57 PM #5
This the one?
Or you could try CDCO in the US, good prices and reasonable postage.
Or this one from Little Machine Shop
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10th January 2009, 03:09 PM #6
thanx guys, certianly something to think about.
If I recall the one I was refering too in my first post, used HSS section as opposed to the boring bars ??Lathe - Hafco AL320G
Mill/Drill - Toolex RF31
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10th January 2009, 10:43 PM #7
The dovetail cutter will cost $60.00 just to cut the dovetail, cheapest set of dovetail cutters I have seen is around $ 220.00.
Time and cost of material would easily exceed the price of a bought one.
But if you want the experience of making such a tool then its worth rolling your own .
Kev."Outside of a dog a book is man's best friend ,inside a dog it's too dark to read"
Groucho Marx
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10th January 2009, 11:18 PM #8GOLD MEMBER
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"Milling - A Complete Course"
from the "Workshop Practice Series", by Harold Hall has a boring head as one of the projects.
It includes an alternative how-to for making the dovetails without using a dovetail cutter.
Cheers,
Andrew
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30th January 2009, 06:41 PM #9Awaiting Email Confirmation
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2nd February 2009, 08:49 PM #10
Tod,
I have a Myford Super 7. with quite a few attachments and would be able to make a boring head like that .
But ,,,,
The link I posted was not to my work ,but a site that I have had bookmarked.
I use it as an inspirational reference for future projects I would like to make.
I also have a Edgwick MK1 6-1/2" center height toolroom lathe ,but is not functional at this time.
I am also a Fitter and Turner by trade ,but don't work in my trade any more ,Its more a hobby now.
Kev."Outside of a dog a book is man's best friend ,inside a dog it's too dark to read"
Groucho Marx
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3rd February 2009, 04:25 PM #11Senior Member
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Oldhack,
If you are not after the precision of a boring head but just want to drill bigger than 1/2" holes occasionally, these are a bit cheaper than a boring head. They work OK in a reasonable sized drill press too.
http://www.practool.com/super-drill.html
The tool requires a 1/2" pilot hole, and the hole diameter is set using the setting gauge supplied. Before I got a boring head I used to use mine to drill up to 50 mm holes in steel plate with no problems, though there is a bit of mucking about to reset the tool for holes bigger than 40 mm. I still use it occasionally if the job won't fit in the lathe or mill. It uses pre-ground re-sharpenable HSS cutters. They are not production type tools but are very handy if you only need to drill the occasional larger hole.
Frank
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7th February 2009, 07:27 AM #12
Thanx Franco,
thats very similiar to the one I had in mind.Lathe - Hafco AL320G
Mill/Drill - Toolex RF31
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