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 Posted: Sat Mar 25, 2006 2:02 pm Post subject: Polishing stainless steel |
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What are the proper steps of polishing stainless steel to a mirror
finish ?
Thanks |
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Devonshire
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| Posted: Sat Mar 25, 2006 4:03 pm Post subject: Re: Polishing stainless steel |
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On the day of 25 Mar 2006 05:48:57 -0800...
meanie@bluebottle.com
typed these letters:
| Quote: | What are the proper steps of polishing stainless steel to a mirror
finish ?
Thanks
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I don't know the proper way but I've done it. I made several rings
from 5/8" (316 I think) stainless steel nuts. After grinding then
filing I sanded with progressively finer sand paper down to fine
emery cloth. I got a mirror finish by polishing with a rag and a
paste automotive mag wheel polish. I think the polish was intended
for aluminum not stainless steel. It took a bit of patience but worked
very well. Regular handling of these rings proved that stainless
steel will not hold a mirror shine for long. But, polishes back to
a mirror shine rather easily.
Devonshire |
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Larry Jaques
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Trevor Jones
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| Posted: Sat Mar 25, 2006 6:02 pm Post subject: Re: Polishing stainless steel |
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meanie@bluebottle.com wrote:
| Quote: |
What are the proper steps of polishing stainless steel to a mirror
finish ?
Thanks
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Start with coarse grit and work to finer ones.
Cheers
Trevor Jones |
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Glenn Ashmore
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| Posted: Sun Mar 26, 2006 2:02 am Post subject: Re: Polishing stainless steel |
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When I am finishing a piece with a mill rolled finish I start with an 80
grit flap wheel to get it flat then move up one grit at a time to 400. If
it is smooth already, like sheet stainless, I start with 240 of even 320.
Each time be very careful to remove all stretches from the previous pass or
you will have to start over from that grit. After I finish with the 400 I
move to a sewn sisal wheel and a gray polishing compound from McMaster to do
the cut pass. Next I move to a sewn muslin wheel with the gray compound. If
it was welded I hook up to a DC power supply and dunk in Citrisurf for about
5 minutes. Final finish is the white compound on a loose muslin wheel.
After that it gets wrapped in cloth and stored until I have about 50 lbs and
send the batch off to an electropolishing shop in Florida.
That last part is not really needed unless you want it absolutely perfect
and it will be in salt water. If you do the rest of the procedure right you
can hardly tell the difference with electropolishing. Electropolishing
just improves the color and corrosion resistance. It doesn't remove
scratches and if you were not careful with the early stage grinding and have
smeared the steel over a scratch early in the process it will remove the
smear and reveal the scratch. .
--
Glenn Ashmore
I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com
<meanie@bluebottle.com> wrote in message
news:1143294537.355189.70700@i39g2000cwa.googlegroups.com...
| Quote: | What are the proper steps of polishing stainless steel to a mirror
finish ?
Thanks
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Robin S.
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| Posted: Sun Mar 26, 2006 2:03 am Post subject: Re: Polishing stainless steel |
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"Trevor Jones" <t.o.jones@sympatico.ca> wrote in message
news:44257F83.931E8BF4@sympatico.ca...
| Quote: |
Start with coarse grit and work to finer ones.
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Remember to remove all the scratch marks from the previous grit before
moving to the next grit. Basically any scratch left by one grit will be very
difficult/time consuming to get rid of using a grit two or more steps away.
You can check your work by changing directions (in a cross-hatch pattern).
When you switch direction, you'll see these deep scratches. If you keep the
same direction all the time, it may look like you're getting a good finish
but you'll never actually remove some of the deep scratches. As you get into
finer grits, these scratches will become more and more apparent.
Another advantage of polishing in a cross-hatch pattern is that you will
smooth out low spots (or at least not increase them). These show up as waves
or "holes" which are unpleasing to look at (IMHO). For example:
http://www.englishcustompolishing.com/usca/gallery/duckhead.html
HTH.
Regards,
Robin |
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Larry Jaques
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| Posted: Wed Oct 31, 2007 1:03 pm Post subject: Re: Polishing stainless steel |
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On Tue, 30 Oct 2007 22:30:21 -0400, with neither quill nor qualm, "Ed
Huntress" <huntres23@optonline.net> quickly quoth:
| Quote: |
"Larry Jaques" <novalidaddress@di\/ersify.com> wrote in message
news:5opfi31psr55rhj2cocctabuqd2vm99ai9@4ax.com...
On Tue, 30 Oct 2007 18:48:42 -0400, with neither quill nor qualm, "Ed
Huntress" <huntres23@optonline.net> quickly quoth:
"Larry Jaques" <novalidaddress@di\/ersify.com> wrote in message
news:n6cfi3td19fqnu0ae5qseg634ev03djip2@4ax.com...
On Tue, 30 Oct 2007 17:40:01 GMT, with neither quill nor qualm,
Dan_Musicant <man@privacy.net> quickly quoth:
I have a couple of stainless steel pots that have had long usage and
don't look so hot.
--snip--
I also have a stainless steel boiler (18/8), which is one of those
coffee servers you see (or saw?) in coffee shops. Makes a nice boiler
(that's what I use it for), but is now so tarnished that on the bottom
in places it's is downright black. I'd like to shine it up too, at least
occasionally, if it can be done without too much effort.
Thanks for any tips.
Run down to your local Wally World and pick up a 4 oz. tube of MAAS
Metal Polish for $3 and change. I just tried a bit on my stainless
steel sink and it amazed me in ten seconds flat. If not, try the DICO
(which Ed keeps forgetting to tell us where he sources.)
Force Machinery, Union, NJ. It's a long ride for you. <g
Joisey? Ayup, it would be.  I drove through there twice (to and
from planes in Newark in '98.) You can keep it, thanks.
They're well known on the commercial side of the business. I'm surprised
you haven't seen them
around.
I see that it's available online. Check out Dico's site while you're at
it.
They have some tips that look useful.
They have compound sticks but no polishing cream, I see.
"Polishing cream"? What's that, facial moisturizer for machinists?
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Aw, ya lazyarse machinist. Manuel, he use it by hand, senor.
I was reacting to the subject line and read "polishing", not
"buffing". YMMV <shrug>
--
Knowledge and timber shouldn't be much used till they are seasoned.
-- Oliver Wendell Holmes |
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