"Ed Huntress" wrote in message
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wrote in message
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On Nov 19, 11:58 am, Gunner Asch wrote:
On Sat, 19 Nov 2011 11:18:06 -0500, tnik wrote:
Does anyone know of a company that makes these anymore? Starrett
doesn't, and sometimes the boss just is animate at buying something
new..

http://www.ebay.com/itm/320796770446

Thanks

Tom

What are they used for?

Im feeling rather embaressed that I dont know.

Gunner

One could not be a successful Leftwinger without realizing that,
in contrast to the popular conception supported by newspapers
and mothers of Leftwingers, a goodly number of Leftwingers are
not only narrow-minded and dull, but also just stupid.
Gunner Asch

I believe that these are used to hold thin, flat work on machine
tables for operating on the flat part. The step goes down, the jack
screw bears against the wide side and you get a downward force along
with the sideways one. Never have used any, saw the setup in an old
machinist's book for setting up big planer jobs. These would be tiny
next to the ones they had. If I'm wrong, someone will pop up.

Stan

================================================== ====

You're right, but the small ones also are commonly used in vises. The edge
faces are slightly angled to apply downforce.

I have a set of them that I've never used.

--
Ed Huntress

I have seen them used for surface grinding operations, like when using a
sine vise. They push the part down flat against the bottom of the vise.
Never seen them used on heavier machining operations like milling.

Best Regards
Tom.
--
http://fija.org/