I am contemplating buying a mill-drill I don't need. The new ones I
have found in an acceptable price range have iso 30, r8, or morse in
different sizes. What is the difference in use? Thanks in advance .

--
Vidar Killingmo

Go with R8, Morse is something that the attachments for mill dirllls is hard
to find. Iso 30 will cost a bunch.

"Vidar Killingmo" wrote in message
...
I am contemplating buying a mill-drill I don't need. The new ones I
have found in an acceptable price range have iso 30, r8, or morse in
different sizes. What is the difference in use? Thanks in advance .

--
Vidar Killingmo

Morse tapers are for drilling, don't take side loads (end mills) well.
R8 is the standard for small mills, would be my first choice on a
mill/drill. ISO 30 are much better than R8 but are much more expensive.
A single ISO30 is in the same price range as a full set of low end R8
collets.

Vidar Killingmo wrote:
I am contemplating buying a mill-drill I don't need. The new ones I
have found in an acceptable price range have iso 30, r8, or morse in
different sizes. What is the difference in use? Thanks in advance .

--
Vidar Killingmo

ISO is the Euro standard, R8 (Bridgeport) the American standard. Morse is OK for drilling. Morse for end mills take a 3/8-16
drawbar and are more difficult to find. ISO 30 is better, but tooling is a little bit more difficult to locate than R8. Please
note that Drawbar threads can come in both metric and inch standards for both ISO 30 and for R8. The solution to the problem is
two draw bars. Either R8 or a 30 Taper is OK.
Steve

"Vidar Killingmo" wrote in message ...
I am contemplating buying a mill-drill I don't need. The new ones I
have found in an acceptable price range have iso 30, r8, or morse in
different sizes. What is the difference in use? Thanks in advance .

--
Vidar Killingmo

On Mon, 09 Nov 2009 11:16:15 -0800, Gunner Asch
wrote:

On Mon, 09 Nov 2009 08:04:36 -0600, RoyJ wrote:

Morse tapers are for drilling, don't take side loads (end mills) well.
R8 is the standard for small mills, would be my first choice on a
mill/drill. ISO 30 are much better than R8 but are much more expensive.
A single ISO30 is in the same price range as a full set of low end R8
collets.

Well.....only if you buy new...and dont buy on Ebay.

In fact...NMTB 30 taper today, can be cheaper than R8


On the right side of the pond, 40 taper is significantly more available, and
thus cheaper, than 30 taper. Got a decision to make as to whether to re-make
the spindle of a Beaver milling machine (40 taper was an option, but 45 years
too late for this machine).


Mark Rand
RTFM