---------------------------- Original Message ---------------------------- Subject: Re: PDP-11/34 rails? From: "Todd Goodman via cctalk" <[email protected]> Date: Mon, March 6, 2017 1:48 am To: "Noel Chiappa" <[email protected]> "General Discussion: On-Topic and Off-Topic Posts" <[email protected]> --------------------------------------------------------------------------
> * Noel Chiappa via cctalk <[email protected]> [170304 22:34]: > [..SNIP..] >> 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/parkerizing/benchtop-parkerizing-kit-prod22737.aspx) > > 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-finishes/air-cure-non-aerosol-paints/cerakote-ovencure-ceramic-coatings-prod26563.aspx) > or even easier might be Duracoat > (http://www.brownells.com/gunsmith-tools-supplies/metal-prep-coloring/paint-finishes/air-cure-non-aerosol-paints/duracoat-paints-prod44374.aspx) > > I haven't seen the coating you're talking about so I could be way off > base too... > > Todd > 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.
