urethane wave

  • Author
  • September 13, 2011 at 4:10 pm #32872


    need some advice on getting rid of urethane wave. we used dc5300. on the first coat there was a huge run and the more clear that we put on the better it looked and actually fixed it alot. originally was only going to put 2 or 3 coats, but wound up putting 5. two days later did some sanding. basically blocked with 1000 then 2000 then 3000. sanded for about 3 hours. compounded and polised the wave is still there. someone told me i should have started with 600 or 800. im not sure how much more clear is left on the panel, anything else i can do other than reshooting clear? keep sanding? i dont know. any input. i know i put too much clear obviously. Thanks for the help

    September 14, 2011 at 3:25 am #32878

    to remove wave you need to block the clear. wetsanding with 1000 aint going to do it. urethane wave come from a combination of a few things. hammering on too many coats of clear, too thick of a clear, improper gun setup, spraying too close or improper spray technique. higher the solid content of the clear the more prone to urethane wave as well but im not saying that you cant get a wave free finish with a high solids clear either. in any case at this point i would flow coat what you have. hard block the clear down with 400 so its flat then recoat with 3 coats of your clear. i dont know what the ratio of that clear is but add some reducer to it. not much maybe 10-15%. try not to hammer the coats on. let sit for a day or two then 1000, 2000, 3000 and buff.

    September 14, 2011 at 8:17 am #32880

    What does urethane wave look like?

    September 15, 2011 at 12:11 am #32891

    cellulite…. big fat ripples lol

    September 15, 2011 at 3:10 am #32899

    Think os suddle waves in the ocean. @ that point, is the begining of sags.

    September 15, 2011 at 8:55 am #32915

    I always have great luck taking a razor blade and shaving the runs/sags 1st than maybe block with 800 than go to the finer papers… but than again I dont run my jobs ever lololololol :stoned

    September 16, 2011 at 8:57 pm #32939

    is there a time frame i can do the flow coat by or can i do it whenever? so i block with 400 and i guess follow that with 800 or will i see the scratches in the clear? basically im doing it over again hahahah

    September 16, 2011 at 9:40 pm #32940

    No real need to follow it up with 800. Scratches all disappear when you apply the clear. If you feel the need you can do a quick buzz over with 600 on a da if you want but you donti have to. No timeframe, you can do it whenever.

    September 16, 2011 at 10:41 pm #32941

    Thanks for the help, really appreciate it. let you know how it turns out

  • You must be logged in to reply to this topic.