[Roadsters] Chrome processing--was Bumper

[ppeters914 at comcast.net]

Rarely gets wet? In B.C.? That's a short driving season. <g>

Pete "still dreaming of a daily driver"

 -------------- Original message ----------------------
From: "Daryl Smith" <drlsmith at dccnet.com>
> Thanks for all the responses regarding painting the inside of a rechromed 
> bumper.
> Mine were painted silver when I got them from the chroming shop. Guess I'll 
> just have to have them done again. POR 15 sounds like a good idea, But 
> rustoleum may work just as well for a car that rarely gets wet.....
> 
> Daryl Smith
> 
> 
> ----- Original Message ----- 
> From: "peter harrison" <granvillecomputing at hotmail.com>
> To: "Daryl Smith" <drlsmith at dccnet.com>; <keith0alan at aol.com>; 
> <tputland at charter.net>; <datsun-roadsters at autox.team.net>
> Sent: Saturday, March 29, 2008 11:24 AM
> Subject: RE: [Roadsters] Chrome processing--was Bumper
> 
> 
> 
> 
> i always paint the inside with two coats of an appropriate colored 
> rustoleum - seems to work fine.
> ----------------------------------------
> > From: drlsmith at dccnet.com
> > To: Keith0alan at aol.com; tputland at charter.net; 
> > datsun-roadsters at autox.team.net
> > Date: Sat, 29 Mar 2008 09:20:35 -0700
> > Subject: Re: [Roadsters] Chrome processing--was  Bumper
> >
> > I had my bumpers done about 12 years ago. I now have some rust starting to
> > form on the back side of the bumpers.
> > Do you coat the back side of the bumpers with POR 15 or similar when you
> > first get them back from the platers?
> >
> > Daryl
> >
> >
> > > tputland at charter.net writes:
> > >
> > >>From  Keith:              "Your parts will end up  paper thin. "
> > >
> > > So.....
> > >
> > > I am a little unclear on this point. I  under stand that the grinding 
> > > will
> > > thin the metal. But doesn't the chroming  process add (layers of metals)
> > > to the
> > > part, making it thicker (and  heavier)?
> > >
> > > Is the thinning from grinding still an issue even with new  metal being
> > > added?
> > >
> > > (read the last line on my signature if you are un  clear as to my mental
> > > abilities!) ;-)
> > >
> > > Tim
> > > Belleville, WI.
> > > '70 SPL  AND SRL
> > > Still clueless but always learning
> > >
> > >
> > >
> > > They are removing steel, a structural material, and adding copper, 
> > > nickel
> > > and chrome, a cosmetic coating. The amount of steel removed to get to 
> > > the
> > > bottom
> > > of the pits is a lot thicker than the amount of copper, nickel, and 
> > > chrome
> > > you  want to pay for. Good question though, in some applications, like
> > > hydraulic  cylinder rods, they will build them up with chrome and grind
> > > them down to
> > > size.
> > >
> > > keith
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