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  • Polyurethane polishing/buffing

    Polyurethane polishing/buffing

    What can be done to highly polish a polyurethane finish? Can it be treated like laquer?

    I intended to work down to 1500 grit or so and then polish with a pad and compound.
    You can tune a piano, but you can't tuna fish.

  • #2
    yep, just like lacquer.
    "Makin' music means I'm makin' friends."

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    • #3
      Depends on which kind of poly you're talking about, but yes they can easily be buffed out. Most don't get as hard as nitro, though.

      Most guys use a buffing arbor and Menzerna compounds.
      HCGB #128

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      • #4
        wet sanding down to 1200 ( or even 2500 to make buffing quicker), then buffing with Meguiars #3, #7 usually does the trick. Get all the hardware & eletronics out of the way. Clean off the sanding grit & compound residue before you re assemble.
        I don't feel tardy!

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        • #5
          Can you get nitro in a rattle can?
          Got any of dem french fried purtaters?

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          • #6
            Yes. Lowes sells lacquer in a can for about $3 a can, or they did a couple of years ago. www.reranch.com is the place to get nitrocellulose in cans. Maybe www.stewmac.com has it too.
            "Makin' music means I'm makin' friends."

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            • #7
              Originally posted by BowerR64
              Can you get nitro in a rattle can?


              You can spray it with a Preval can.
              HCGB #128

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              • #8
                Originally posted by BowerR64
                Can you get nitro in a rattle can?


                yup
                spam:
                GFS Classic Alnico Tele neck pickup - $15
                GFC Classic Alnico 62 Tele bridge pickup - $15
                Trade offers welcome

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                • #9
                  Holy hijacked thread, Batman!
                  You can tune a piano, but you can't tuna fish.

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                  • #10
                    Poly finishes can have very long cure times, especially water based products in a high humidity environment. Be sure to wait long enough before final polishing otherwise yo may be wasting your time.
                    Sale Pending

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                    • #11
                      Originally posted by ThomasD
                      Poly finishes can have very long cure times, especially water based products in a high humidity environment. Be sure to wait long enough before final polishing otherwise yo may be wasting your time.


                      This is good advice. I'm not using a water based product, but it still seems to be a bit gummy 10 hours after coating. I'm waiting extra long plus baking the coats in the sun for a while. Also heating the poly makes it flow better, but I'm not sure if it will de stabilize it too much.
                      You can tune a piano, but you can't tuna fish.

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                      • #12
                        Originally posted by koco
                        Holy hijacked thread, Batman!


                        sorry dude
                        Got any of dem french fried purtaters?

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                        • #13
                          Originally posted by BowerR64


                          sorry dude


                          Not a big deal, I just really wanted to use a Batman reference.
                          You can tune a piano, but you can't tuna fish.

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                          • #14
                            Originally posted by koco


                            This is good advice. I'm not using a water based product, but it still seems to be a bit gummy 10 hours after coating. I'm waiting extra long plus baking the coats in the sun for a while. Also heating the poly makes it flow better, but I'm not sure if it will de stabilize it too much.


                            I hate to be the bearer of bad news, but, you should proabably let the finish cure for a good two weeks before final polish, a month might even be better.

                            Finishes cure incrementally - the majority of the process occurs rather rapidly and the finish may be 'wearable' in a matter of hours or days but in order to get a high gloss from polishing you want that finish to be almost entirely, or entirely, hardened and that takes time.

                            It is unlikely that sun/UV exposure will speed the process significantly - unless recommended by the finish manufacturer I'd suggest avoiding it, conceivably it could interfere with the catalysis/polymerization and actually make the final finish softer.
                            Sale Pending

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