>I am on a quest to find a manufacturer to build me a hundre tapered reamers
>that have a max. diameter of 3/8ths of an inch with a 5 dgree taper. Any
>advice is well apreciated. Also does any one have experience with a rusnok
>milling machine?? Thanks John
John,
A good news group on metal questions is "rec.crafts.metalworking"
it has too much traffic from lots of people, but there is also
a FAQ (I need to look up the ftp location) that is excellent.
On your reamer: A 5 degree taper is just about 1" in a foot (1/12).
For the maximum size of 3/8" tapered down at that rate, means
an overall length of around 4.5" That is a COMMON size for a
hand reamer used by electricians, ect on electrical boxes.
Is the 5 degree a critial taper? Locking pins are around a
1 degree taper, Pipe taps (3/8 size pipe is NOT the same
as 3/8") are around 4 degrees.
As far as a Rusnok milling machine... no idea. What is the
spindle like? (Thankfully my Index milling machine was converted
from B&S #9 to a much more common R-8 spindle prior to my purchase.
Easy to obtain tooling for something more common).
Sorry I do not have a better answer to your question. If you own
a metal lathe, with a taper attachment and a milling machine you
could make your own. ;-) Frank McLean (HSM writer) had a good
article on making your own reamers and counterbore.
Cheers,
Tom Walter
Austin, TX.
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