RE: Machining Delrin at home (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Mon, 18 Jun 2007 02:01:24 +0000
From: Jeff Behary <jeff_behary@xxxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: RE: Machining Delrin at home (fwd)

Matt,

Delrin or Acetal is one of the most wonderful plastics ever invented.  One 
of the machinist catalogues, MSC or McMaster Carr? said that "within the 
confines of plastics this material is considered perfect" and I agree 100%!

It machines beautifully, and is one of the few components that can pass off 
as "hard rubber" for doing restoration work.  For standoffs, coil forms, 
discharger rod handles, spark gap knobs, bases, you name it!  You can turn 
it on a lathe and it looks absolutely beautiful, and it hold threads 
perfectly too!  It doesn't gum up the tools, it doesn't change color where 
it was machined, and the black form makes a nice insulator that is nice 
looking too!  It also doesn't dull the tools as fast as other plastics, I 
think it may be less abrasive.

Sometimes you can get a good value on Ebay for small scraps, like off-cuts 
from CNC machines.

Jeff Behary, c/o
The Turn Of The Century Electrotherapy Museum
http://www.electrotherapymuseum.com

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