RE: [CAD_CAM_EDM_DRO] Re:DRILL ROD FOR LINEAR WAYS

Hi Dave

That was my thought and fo course when it is worn out it will ave plenty of
other uses

roger


-----Original Message-----
From: turbulatordude [mailto:dave_mucha@...]
Sent: 28 February 2005 20:43
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re:DRILL ROD FOR LINEAR WAYS




--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Roger Hampson"
<r_.hampson@t...> wrote:

> Hi Allan,
>
> Over here in the UK we can obtain a specific steel bar that is

centerless

> ground to fine tolerances usually 0.5 thou 0.0005" that can be

hardened by

> heating to cherry red and quenching in water.

There are three common varieties. We call them something hardening
to represent what medium is used to harden them.

one is water, one is oil and the other is air. Each has it's own
properties. All move a little when heated so the soft stuff you buy
is nice for a lot of stuff. but it is too soft for prolonged use with
ball slides. Then again, it is cheap enough to replace a couple times.

Dave








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