On Tue, 22 Mar 2011 23:55:29 -0700, Rich Grise
wrote:

"Lloyd E. Sponenburgh" lloydspinsidemindspring.com wrote:
BQ340 fired this volley in news:4d8942b4$0$23134

Not that I've noticed in the set I have unless it is by a couple tenths.
(HSS, bright, Made in USA.)

You didn't say what you paid for the set, but if you do any (read that as
_ANY_) press fits or shrink fits, you'd notice in a big hurry.

But don't reamers cost a fortune?

Thanks,
Rich
===========
Much depends on the type of work you are doing.

"Complete" sets are indeed expensive, but normally you only
need a few sizes. It can be useful to get three reamers,
one undersize, one on size and one over size in your common
sizes. Most any good mill supply should have in stock, but
for illustration see
http://tool.wttool.com/search?p=KK&s...0 Reamer&rk=2
http://www.wttool.com/index/page/pro...r+Set+%28WT%29

Depending on your shop practices/equipment, a useful reamer
modification is the trimming the reamer length to about the
same length as a jobber or even s/m length drill in the same
size as this will allow you to drill and ream a hole in the
same set-up with out losing alignment cranking the table
down or head up for clearance, moving the table to change
tools, etc.

Unless you have a heat problem, the invention of loc-tite
eliminated much of the need for press fits and very tight
hole tolerances.

If you have the time you can also make your own reamers, and
these are easy to sharpen. see
http://bbs.homeshopmachinist.net/arc...p/t-16514.html
http://bbs.homeshopmachinist.net/arc...p/t-39160.html
http://www.diybanter.com/metalworkin...e-reamers.html
http://www.homemodelenginemachinist....e;topic=9854.0


I have all three Lautard's books -- all are good reads and
well worth the money.
http://www.lautard.com/t3.htm



-- Unka George (George McDuffee)
...............................
The past is a foreign country;
they do things differently there.
L. P. Hartley (1895-1972), British author.
The Go-Between, Prologue (1953).

F. George McDuffee wrote:
On Tue, 22 Mar 2011 23:55:29 -0700, Rich Grise
"Lloyd E. Sponenburgh" lloydspinsidemindspring.com wrote:

Not that I've noticed in the set I have unless it is by a couple
tenths. (HSS, bright, Made in USA.)

You didn't say what you paid for the set, but if you do any (read that
as _ANY_) press fits or shrink fits, you'd notice in a big hurry.

But don't reamers cost a fortune?

Much depends on the type of work you are doing.

"Complete" sets are indeed expensive, but normally you only
need a few sizes. It can be useful to get three reamers,
one undersize, one on size and one over size in your common
sizes. Most any good mill supply should have in stock, but
for illustration see

http://tool.wttool.com/search?p=KK&s...0 Reamer&rk=2

http://www.wttool.com/index/page/pro...r+Set+%28WT%29

Thanks for this. Like I've said, I'm just the draftsman, but I was asking
how I should dimension a slip-fit, and a couple of real machinists told
me, "Oh, just say "slip-fit to so-and-so," and we'll figure it out." That
took off a lot of pressure. :-)

Thanks again,
Rich