On Mon, 28 Mar 2011 16:07:12 -0500, Ignoramus7104
wrote:

Once in a while, i need to hold round objects. It would be either
thin, flat round things,
One possible solution flat round is what is called a finger
plate or finger vise. Nowadays these are generally shop
made.
http://www.lautard.com/books.htm
for picture see
http://www.gadgetbuilder.com/FingerPlate.html
http://www.hemingwaykits.com/acatalo...Plate_Kit.html
http://www.swarfmaker.com/benchblock_mclean.jpg


or, conversely, tall things.

If for end working, your best solution may not be a vise [in
the usual sense] at all, but rather a substantial slotted
right angle iron, with "pinch" clamps or cotters you can
make yourself. Drawback is that you will need a different
clamp or cotter for each diameter, but you can accommodate
tapered or threaded stock and machine the pinch clamp* to a
larger size to reuse. It is also easy to set up accurate and
repeatable angles. Magnetic sine bars are best [most
accurate and easiest to use] , but a good protractor is
generally adequate for home shop projects.
http://www.metalworking.com/dropbox/...tterclosed.jpg
http://www.metalworking.com/dropbox/...cotteropen.jpg
http://www.metalworking.com/dropbox/...teroutside.jpg
* avoid the temptation to use a set screw. These will
generally mar the work and don't hold as well as a good
close fitting pinch clamp or cotter.

Most of the mail order mill supplies should have angle irons
in stock. Get one that is about max for your machine. For
some examples see
http://www.use-enco.com/CGI/INPDFF?P...PARTPG=INLMK32



The axis of the round object would be parallel to Z.

What is the right way to hold them in a vise? With vee blocks?
Anything else?

i

-- 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).