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Technical Un-polishing Staineless Steel?

Discussion in 'The Hokey Ass Message Board' started by 5window, Jul 13, 2019.

  1. 5window
    Joined: Jan 29, 2005
    Posts: 6,676

    5window
    Member

    I have strip of polished stainless (formerly part of a prison mirror blank) about 2' x 28" that I need to bring down to a satin finish. I don't have a lot of scrap to experiment on, so I'd appreciate ideas on how to do this. Directional sanding, random orbit sanding, wet-dry paper,grit size,etc. Opinions appreciated.
     
  2. pirate
    Joined: Jun 29, 2006
    Posts: 258

    pirate
    Member
    from Alabama

    Scotch Brite either red or green
     
    Tim likes this.
  3. pitman
    Joined: May 14, 2006
    Posts: 4,627

    pitman
    Member
    from Hampsha

    Was gonna say. Experiment, find your pref. Grade, and go. Drag all the way across.
    I've used a guide board, to help align passes.
     
  4. rusty rocket
    Joined: Oct 30, 2011
    Posts: 3,339

    rusty rocket
    Member

    I was going to say scotch brite also but what about some 1500 grit on a d.a.?
     
    Last edited: Jul 13, 2019
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  5. Happydaze
    Joined: Aug 21, 2009
    Posts: 741

    Happydaze
    ALLIANCE MEMBER

    Blasting should give you a uniform finish.

    Chris
     
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  6. David Gersic
    Joined: Feb 15, 2015
    Posts: 1,840

    David Gersic
    Member
    from DeKalb, IL

    I’d go with red Scotchbrite pads. Maybe green, but start with red.


    Sent from my iPad using The H.A.M.B. mobile app
     
  7. David Gersic
    Joined: Feb 15, 2015
    Posts: 1,840

    David Gersic
    Member
    from DeKalb, IL

    That’ll be too shiny if he’s looking for “satin”.


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  8. 51504bat
    Joined: May 22, 2010
    Posts: 1,054

    51504bat
    ALLIANCE MEMBER

    If I remember correctly when the stainless exterior on the Kodak theater in downtown LA was causing extreme sun reflection issues the cure was to Scotch Brite the entire building to cut down on the sun glare.
     
    pitman likes this.
  9. Hnstray
    Joined: Aug 23, 2009
    Posts: 10,427

    Hnstray
    ALLIANCE MEMBER
    from Quincy, IL

    @5window ......they let you bring home souvenirs?? :eek:............ :D
     
    Last edited: Jul 13, 2019
  10. Lepus
    Joined: Nov 18, 2016
    Posts: 99

    Lepus

    We use red and grey Scotchbrite at work, I don,t know what the grits are, but the grey is finer, and would be best for a matte finish, using a circular motion. Sand blasting or glass beading one side of a piece of sheet metal will put a curve in it.
     
  11. rusty rocket
    Joined: Oct 30, 2011
    Posts: 3,339

    rusty rocket
    Member

    Another thought here, how about some muratic acid wiped from a soft cloth. That might etch the shininess off.
     
    sport fury likes this.
  12. That will turn it white and most likely streaky, scotchbrite is the best bet


    Sent from my iPhone using H.A.M.B.
     
  13. lake_harley
    Joined: Jun 4, 2017
    Posts: 568

    lake_harley
    Member

    I agree with the scotchbrite but will offer another idea for you to consider. I needed to match a "brushed" finish on stainless steel projects at my fabrication business on a couple occasions. One time I used a belt sander with about an 80 or 120 grit belt and was pleased with the results. If a finer finish is desired you might also try the wheels that are used in a die grinder. They have alternating layers of scotchbrite material and sandpaper. It'll take a even, gently touch to not end up with "lines" but they can be touched up with scotchbrite pads. The wheels will just get you there quicker if you have a lot of area to do.

    Good luck.

    Lynn
     
  14. 5window
    Joined: Jan 29, 2005
    Posts: 6,676

    5window
    Member

    :) There used to be a guy at Carlisle who had a whole pile of these sheets and sold them for about $10. I used a polished one on my A firewall. Came out pretty good.
     
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  15. Doublepumper
    Joined: Jun 26, 2016
    Posts: 356

    Doublepumper
    Member

    How about rubbing in some valve grinding compound? Dollop a glob of it on and use your hand to scuff it all around.
     
  16. David Gersic
    Joined: Feb 15, 2015
    Posts: 1,840

    David Gersic
    Member
    from DeKalb, IL

    Better yet, put a Roloc on a die grinder and do some engine turning.


    Sent from my iPad using The H.A.M.B. mobile app
     

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