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Years ago (perhaps still) there was some video on YouTube showing one of
the Vietnamese workshops making stainless steel bumpers. It was a bunch of
Geppettos banging them out by hand in a courtyard more than a factory with
machine tooling.
My guess for why the back side is heavily painted is to hide the
handworking marks that are polished out of the front side.
TeriAnn, your 2008 bumpers sound like chrome plated carbon steel, not
polished stainless. The idea of some amalgam of stainless and carbon
steels to save money doesn't square with the cottage/craft industry that
makes these, AFAIK.
On Sun, May 14, 2023 at 8:50=E2=80=AFAM TeriAnn J. Wakeman <tjwakeman@gmail=
.com>
wrote:
> What is flaking off my bumper as I go over the rust with steel wool is
> about the same thickness as chrome plating. think the question to ask a
> manufacturer is if the bumper is 100% stainless steel or is it plated on
> the front. And to look at the back to see if it is painted or unpolished
> steel.
>
> TeriAnn
>
> On 5/14/23 5:35 AM, DAVID MASSEY wrote:
>
> They make stainless pots and pans with aluminum inserts. These are forge=
d
> together using various processes. It is possible that they are forging
> flat plates of stainless and mild steel and then punching and forming
> bumpers out of that sandwich. Stainless steel has a reputation of being
> difficult to machine and this may explain why they would go to the troubl=
e
> of forging a thin layer or stainless on a more easily machinable soft ste=
el.
>
> On the other hand, they say "100% stainless steel grade 304 , thickness
> 1.5mm" If that were the case why paint the inside with three coats of
> paint? Me thinks they are lying.
>
> Dave
>
>
>
>
> -----Original Message-----
> From: TeriAnn J. Wakeman <tjwakeman@gmail.com> <tjwakeman@gmail.com>
> To: triumphs@autox.team.net
> Sent: Sat, May 13, 2023 8:28 pm
> Subject: Re: [TR] Stainless Steel
>
> On 5/13/23 6:08 PM, stagbytriumph@triumphstagclub.org wrote:
> > Sorry Alex,
> >
> > You may want to do some fact checking. There is no grade for "solid
> stainless steel".
> >
> > I do not believe a stainless-steel plating exists for plating over mild
> steel technology exists a of
> > yet.
>
> "Welcome to PTT BUMPERS. We are a specialist manufacturing in stainless
> steel bumpers for classic car. Our bumper are made of 100% stainless
> steel grade 304 , thickness 1.5mm and hand polished. The gloss of bumper
> is shiny like mirror polish and the backside of bumper are cover by 3
> painted layers to protect the bumper from the bad weather and chemicals
> elements."
>
> They plate them somehow.
>
>
> ** triumphs@autox.team.net **
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/pipermail/triumphs
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>
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>
>
> --
>
> Book - The Essential Guide to Overland Travel in the United States and
> Canada <http://overlandtravel.us>
> 2 years to write and 38 years of travel and camping to learn what to writ=
e
>
> *Because the world beckons and life waits for no one*
> ** triumphs@autox.team.net **
>
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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-size:small">Yea=
rs ago (perhaps still) there was some video on YouTube showing one of the V=
ietnamese workshops making stainless steel bumpers.=C2=A0 It was a bunch of=
Geppettos banging them out by hand=C2=A0in a courtyard more than a factory=
with machine tooling.</div><div class=3D"gmail_default" style=3D"font-size=
:small"><br></div><div class=3D"gmail_default" style=3D"font-size:small">My=
guess for why the back side is heavily painted is to hide the handworking =
marks that are polished out of the front side.</div><div class=3D"gmail_def=
ault" style=3D"font-size:small"><br></div><div class=3D"gmail_default" styl=
e=3D"font-size:small">TeriAnn, your 2008 bumpers sound like chrome plated c=
arbon steel, not polished stainless.=C2=A0 The idea of some amalgam of stai=
nless and carbon steels to save money doesn't square with the cottage/c=
raft industry that makes these, AFAIK.</div></div><br><div class=3D"gmail_q=
uote"><div dir=3D"ltr" class=3D"gmail_attr">On Sun, May 14, 2023 at 8:50=E2=
=80=AFAM TeriAnn J. Wakeman <<a href=3D"mailto:tjwakeman@gmail.com";>tjwa=
keman@gmail.com</a>> wrote:<br></div><blockquote class=3D"gmail_quote" s=
tyle=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);pad=
ding-left:1ex">
=20
=20
=20
<div>
<div>What is flaking off my bumper as I go
over the rust with steel wool is about the same thickness as
chrome plating.=C2=A0 think the question to ask a manufacturer is if
the bumper is 100% stainless steel or is it plated on the front.
And to look at the back to see if it is painted or unpolished
steel.<br>
</div>
<div><br>
</div>
<div>TeriAnn<br>
</div>
<div><br>
</div>
<div>On 5/14/23 5:35 AM, DAVID MASSEY wrote:<br>
</div>
<blockquote type=3D"cite">
=20
<div style=3D"color:black;font:12pt Arial,Helvetica,sans-serif">
<div> <font size=3D"3">They make stainless pots and pans with
aluminum inserts.=C2=A0 These are forged together using various
processes.=C2=A0 It is possible that they are forging flat plat=
es
of stainless and mild steel and then punching and forming
bumpers out of that sandwich.=C2=A0 Stainless steel has a
reputation of being difficult to machine and this may
explain why they would go to the trouble of forging a thin
layer or stainless on a more easily machinable soft steel.</fon=
t></div>
<div><font size=3D"3"><br>
</font></div>
<div><font size=3D"3">On the other hand, they say "</font><fon=
t size=3D"2">100% stainless steel grade 304 , thickness 1.5mm</font><font s=
ize=3D"3">"=C2=A0=C2=A0 If that were the case why paint the inside wit=
h
three coats of paint?=C2=A0 Me thinks they are lying.<br>
</font></div>
<div> <br>
</div>
<div style=3D"clear:both">
<div style=3D"color:black;font:12pt Arial,Helvetica,sans-serif">
<div style=3D"color:black;font:12pt Arial,Helvetica,sans-serif"=
>
<div><font size=3D"4">Dave <br>
</font></div>
<div><span style=3D"font-size:10pt;font-family:sans-serif;col=
or:black"><br>
</span></div>
<br>
</div>
</div>
</div>
<div> <br>
</div>
<div> <br>
</div>
<div style=3D"font-family:arial,helvetica;font-size:10pt;color:blac=
k"><font size=3D"2">-----Original Message-----<br>
From: TeriAnn J. Wakeman <a href=3D"mailto:tjwakeman@gmail.com"=
target=3D"_blank"><tjwakeman@gmail.com></a><br>
To: <a href=3D"mailto:triumphs@autox.team.net"; target=3D"_blank=
">triumphs@autox.team.net</a><br>
Sent: Sat, May 13, 2023 8:28 pm<br>
Subject: Re: [TR] Stainless Steel<br>
<br>
<div dir=3D"ltr">On 5/13/23 6:08 PM, <a shape=3D"rect" href=3D"=
mailto:stagbytriumph@triumphstagclub.org"; target=3D"_blank">stagbytriumph@t=
riumphstagclub.org</a>
wrote:<br clear=3D"none">
> Sorry Alex,<br clear=3D"none">
><br clear=3D"none">
> You may want to do some fact checking.=C2=A0 There is no
grade for "solid stainless steel".<br clear=3D"none=
">
><br clear=3D"none">
> I do not believe a stainless-steel plating exists for
plating over mild steel technology exists a of<br clear=3D"no=
ne">
> yet.<br clear=3D"none">
<br clear=3D"none">
"Welcome to PTT BUMPERS. We are a specialist manufacturi=
ng
in stainless <br clear=3D"none">
steel bumpers for classic car. Our bumper are made of 100%
stainless <br clear=3D"none">
steel grade 304 , thickness 1.5mm and hand polished. The
gloss of bumper <br clear=3D"none">
is shiny like mirror polish and the backside of bumper are
cover by 3 <br clear=3D"none">
painted layers to protect the bumper from the bad weather
and chemicals <br clear=3D"none">
elements."<br clear=3D"none">
<br clear=3D"none">
They plate them somehow.
<div id=3D"m_-5357839319509622916yqtfd88757"><br clear=3D"non=
e">
<br clear=3D"none">
** <a shape=3D"rect" href=3D"mailto:triumphs@autox.team.net=
" target=3D"_blank">triumphs@autox.team.net</a>
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Donate: <a shape=3D"rect" href=3D"http://www.team.net/donat=
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</div>
</div>
</font></div>
</div>
</blockquote>
<p><br>
</p>
<div>-- <br>
<p align=3D"center"><a href=3D"http://overlandtravel.us"; target=3D"_b=
lank">Book - The
Essential Guide to Overland Travel in the United States and
Canada</a>
<br>
2 years to write and 38 years of travel and camping to learn
what to write<br>
<br>
<b>Because the world beckons and life waits for no one</b></p>
</div>
</div>
** <a href=3D"mailto:triumphs@autox.team.net"; target=3D"_blank">triumphs@au=
tox.team.net</a> **<br>
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Archive: <a href=3D"http://www.team.net/pipermail/triumphs"; rel=3D"noreferr=
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</blockquote></div>
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