Alternate ways of finishing a stainless steel sheet.
Close
Login to Your Account
Results 1 to 20 of 20
  1. #1
    Join Date
    Mar 2009
    Country
    UNITED STATES
    State/Province
    California
    Posts
    4,901
    Post Thanks / Like
    Likes (Given)
    89
    Likes (Received)
    901

    Default Alternate ways of finishing a stainless steel sheet.

    1. Mounting a brush in a mill head and sweeping across the surface.
    2. Use same brush but do not sweep, come down on sheet every few inches and make consistent pattern.
    3. 400 or 600 grit brushed on surface.
    4. Bead blast.
    5. Chemical dip.

    Involve a .057 sheet of stainless.

    I also want to cut 26 slots .090-.100" wide and 1.5" long. I have not checked anywhere yet. But would a 3/32 bit do this or will I be breaking half a dozen cutters before the job is done. This would be a grill cover for a fan. Another way is to cut out a larger hole and cover it with a custom grill, with one screw in each of four corners.

    I got the sheet at Alan Steel from a pile of stuff that probably came out of a restaurant kitchen. Probably sitting there for at least 3-4 years.
    For any of the locals who don't know about Alan Steel in Redwood City. Get knowledgeable. I asked the owner if I could take some pictures and post them here. He asked me not to do that because he doesn't want to advertise. Local business is plenty.

    Thank you for any advice.

  2. #2
    Join Date
    Feb 2008
    Location
    Mishawaka, IN
    Posts
    338
    Post Thanks / Like
    Likes (Given)
    38
    Likes (Received)
    78

    Default

    I'd be punching the slots with a ironworker and using either a stroke sander or belt sander to put a #4 brush finish on it.

    Sent from my E6910 using Tapatalk

  3. Likes Scottl liked this post
  4. #3
    Join Date
    Nov 2013
    Location
    Eastern Massachusetts, USA
    Posts
    4,093
    Post Thanks / Like
    Likes (Given)
    4407
    Likes (Received)
    4297

    Default

    Quote Originally Posted by danil View Post
    I'd be punching the slots with a ironworker and using either a stroke sander or belt sander to put a #4 brush finish on it.

    Sent from my E6910 using Tapatalk
    What he said but if you are looking for a more decorative finish than plain brushed turning the part 90 degrees before the final pass gives an attractive cross-hatched look.

  5. #4
    Join Date
    Oct 2005
    Country
    UNITED STATES
    State/Province
    Pennsylvania
    Posts
    14,547
    Post Thanks / Like

    Default

    I would coarse sandblast to even everything out (and get rid of machining/punching marks)

    And then work it down from there with scotchbrite/wirewheel/sandpaper etc.

  6. #5
    Join Date
    Dec 2012
    Location
    Se Ma USA
    Posts
    1,448
    Post Thanks / Like
    Likes (Given)
    111
    Likes (Received)
    817

    Default

    Perfect job for a laser, apply finish first.
    3M makes some really good abrasive brushes in cup and wheel form. And they last a real long time.

  7. Likes jrmach liked this post
  8. #6
    Join Date
    Sep 2012
    Location
    NW Iowa
    Posts
    243
    Post Thanks / Like
    Likes (Given)
    131
    Likes (Received)
    191

    Default

    Either finish it with a Dynabrade finishing wheel or glass bead blast it. When I fabricated stainless rotational molds, we used glass bead blasting for the interior surface finish. It's a softer finish than a shot blasted finish (and steel shot blasting will rust from the residual shot).

  9. #7
    Join Date
    Dec 2014
    Country
    UNITED STATES
    State/Province
    Arizona
    Posts
    369
    Post Thanks / Like
    Likes (Given)
    39
    Likes (Received)
    62

    Default

    For finishing -
    #1- time saver #2 stroke sander

    How big of sheet?

    For slots -
    Punch
    Laser
    Plasma
    Water jet

    Plenty of ways to skin a kitty.

  10. #8
    Join Date
    Mar 2009
    Country
    UNITED STATES
    State/Province
    California
    Posts
    4,901
    Post Thanks / Like
    Likes (Given)
    89
    Likes (Received)
    901

    Default

    Quote Originally Posted by azmachining View Post
    For finishing -
    #1- time saver #2 stroke sander

    How big of sheet?

    For slots -
    Punch
    Laser
    Plasma
    Water jet

    Plenty of ways to skin a kitty.
    It's a small sheet about 3" x 8". A bulkhead for a VFD.

    I don't have any of that stuff for cutting slots.

    Found a ball type hone I used for a engine cylinder. Might try to spin it in a drill chuck and run it over the surface in a random fashion.

  11. #9
    Join Date
    Apr 2004
    Location
    Modesto, CA USA
    Posts
    6,747
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    1122

    Default

    Get a flat grinding wheel mounted on a dremel shank say one inch diameter. Use that flat circle end onto the work in a dril lpress in a overlapping pattern to give it the engine turned look. I suppose a small cup wire brush could do it as well.
    The classic method is a wooden dowel and grinding compound
    Bill D.

  12. #10
    Join Date
    Jan 2010
    Country
    UNITED STATES
    State/Province
    North Carolina
    Posts
    167
    Post Thanks / Like
    Likes (Given)
    262
    Likes (Received)
    89

    Default

    Quote Originally Posted by Bill D View Post
    Get a flat grinding wheel mounted on a dremel shank say one inch diameter. Use that flat circle end onto the work in a dril lpress in a overlapping pattern to give it the engine turned look. I suppose a small cup wire brush could do it as well.
    The classic method is a wooden dowel and grinding compound
    Bill D.
    Craytex round abrasive sticks chucked in a mill or drill press also work well for this.

  13. #11
    Join Date
    Jan 2007
    Location
    Norfolk, UK
    Posts
    18,604
    Post Thanks / Like
    Likes (Given)
    14148
    Likes (Received)
    14140

    Default

    The Q was ''Alternate ways of finishing a stainless steel sheet. '' …

    Etch primer and colour coat of your choice ?

  14. Likes Bobw, Silent_Man liked this post
  15. #12
    Join Date
    Apr 2004
    Location
    Modesto, CA USA
    Posts
    6,747
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    1122

    Default

    Leave it as is and call it "steampunk".

  16. Likes Limy Sami liked this post
  17. #13
    Join Date
    Dec 2014
    Country
    UNITED STATES
    State/Province
    Arizona
    Posts
    369
    Post Thanks / Like
    Likes (Given)
    39
    Likes (Received)
    62

    Default

    Sounds like you need to learn the art of polishing with a air grinder. Use a glue ball, scotch brite flap disc, or cratex.
    You could also nail a piece of scotch brite to a board and drag it. Super easy, It's flat and small. I could finish those in literally 2 minutes with a air grinder, both sides.

  18. #14
    Join Date
    Feb 2005
    Location
    Hatch, NM Chile capital of the WORLD
    Posts
    9,018
    Post Thanks / Like
    Likes (Given)
    13662
    Likes (Received)
    10663

    Default

    The classic method is a wooden dowel and grinding compound
    There are a bunch of ways to do it.. The grinding compound didn't seem
    to work very well for me.. I ended up using a wine cork with sand paper
    stuck to it. Worked pretty well.

  19. #15
    Join Date
    Aug 2008
    Location
    Californeeeah
    Posts
    1,485
    Post Thanks / Like
    Likes (Given)
    47
    Likes (Received)
    315

    Default

    A random orbital palm sander gives a nice finish.

  20. Likes jrmach liked this post
  21. #16
    Join Date
    Mar 2009
    Country
    UNITED STATES
    State/Province
    California
    Posts
    4,901
    Post Thanks / Like
    Likes (Given)
    89
    Likes (Received)
    901

    Default

    Quote Originally Posted by Bobw View Post
    There are a bunch of ways to do it.. The grinding compound didn't seem
    to work very well for me.. I ended up using a wine cork with sand paper
    stuck to it. Worked pretty well.
    The last wine cork I popped was a fake, just plastic. Better upgrade to a more expensive brand.

    I may practice a little with some of the ideas.

  22. Likes Bobw liked this post
  23. #17
    Join Date
    Sep 2002
    Location
    People's Republic
    Posts
    2,957
    Post Thanks / Like
    Likes (Given)
    212
    Likes (Received)
    2055

    Default

    Predrill to save the endmill
    keep the rpms low in case it is 304
    it is so small just a sheet of sandpaper on a backer of some sort, or one of those sponges with sandpaper on it
    try to keep the stokes a straight as possible your eye picks up the little wiggle at the end of the stroke

  24. #18
    Join Date
    Sep 2002
    Location
    People's Republic
    Posts
    2,957
    Post Thanks / Like
    Likes (Given)
    212
    Likes (Received)
    2055

    Default

    BTW I am going to do a similar project, as the faux brushed nickle plastic bathroom vent grill I bought 9 years ago is going green, so this process is actually on my mind

  25. #19
    Join Date
    Apr 2004
    Location
    Modesto, CA USA
    Posts
    6,747
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    1122

    Default

    Throw it in the street and let a few cars and trucks drive over it. Get it back before someone picks it up and call it steam punk. I read about a antique furniture forger who would throw his work into the ocean to get a beat up wave action on the sand. He also buried it in manure piles to give it the aged yellowed look.
    Bill D

  26. #20
    Join Date
    Mar 2009
    Country
    UNITED STATES
    State/Province
    California
    Posts
    4,901
    Post Thanks / Like
    Likes (Given)
    89
    Likes (Received)
    901

    Default

    Quote Originally Posted by gustafson View Post
    BTW I am going to do a similar project, as the faux brushed nickle plastic bathroom vent grill I bought 9 years ago is going green, so this process is actually on my mind
    I tried a abrasive nylon wire wheel brush. All it did was clean the dust off the surface.


Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •