5 Mar
2017
5 Mar
'17
4:49 p.m.
---------------------------- Original Message ----------------------------
Subject: Re: PDP-11/34 rails?
From: "Todd Goodman via cctalk" <cctalk at classiccmp.org>
Date: Mon, March 6, 2017 1:48 am
To: "Noel Chiappa" <jnc at mercury.lcs.mit.edu>
"General Discussion: On-Topic and Off-Topic Posts" <cctalk at
classiccmp.org>
--------------------------------------------------------------------------
* Noel Chiappa via cctalk <cctalk at
classiccmp.org> [170304 22:34]:
[..SNIP..]
Looking at the one pair of Chassis-Trak rails I acquired by chance, and am modifying for
the 11/15, the phosphate grey surface does indeed look like Parkerizing to me.
Although I have yet to find a script 'F' stamped on them (Todd would know :-)
Steve.
Anyway, I've seen BA11-K boxes with several
different kind of mounting
slides.
The tall, grey-coated ones are made by Chassis Trak, a division of General
Devices of Indianapolis. The 4 I looked at, all idential looking (except for
handedness), all had different numbers on the CT sticker, so I don't know what
the model number is! This one says '060RH'.
[..Snip..]
BTW, does anyone know that they grey coating is?
Is it some sort of phosphate
plating, or perhaps some sort of early powder coat, or what? Mine are rusty,
and I'd like to blast them and get them re-coated, but I can't figure out
what that coating is.
Noel
The gray phosphate/nitrate coating sounds like Parkerizing.
(https://en.wikipedia.org/wiki/Parkerizing)
Gun parts places have home kits for doing the same (such as Brownell's
http://www.brownells.com/gunsmith-tools-supplies/metal-prep-coloring/parker…)
But there are other coatings that might be easier to use such as
Cerakote
(http://www.brownells.com/gunsmith-tools-supplies/metal-prep-coloring/paint-…)
or even easier might be Duracoat
(http://www.brownells.com/gunsmith-tools-supplies/metal-prep-coloring/paint-…)
I haven't seen the coating you're talking about so I could be way off
base too...
Todd