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how to recondition any E30 turn signal

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    how to recondition any E30 turn signal

    so you want new amber markers, but you're too cheap to buy new ones. refinish them like I did!

    for this job you will need:
    • 400, 600, 1000, 1500, 2000 grit 3M wet sandpaper
      (buy the pricier 3M, it'll be worth it. I've made the mistake of using POS dollar store paper and the sheet was worn out and done for after 5 minutes. "the poor man pays twice!")
    • 3M foam sanding block (size of index card roughly, very flexy, can find in any auto parts store)
    • buffing tripoli/jewlers rouge/metal polish whatever and a small buffing wheel (I used a dremel with a 1'' cotton sewn wheel)
    • can of patience, took me 3 hours


    I spent roughly 5 min. on every marker sanding it down with each grit of sandpaper wrapped around the 3M block. 400 grit is the most important stage. 400 will remove all the rock chips your tired markers wear. it's fine to sand off the lettering, not like it matters. in my 2nd photo, you can see a deep rock chip the sandpaper didn't level off in the middle of the left marker. every pit you don't sand out flat will be evident in the end.

    I did all the wet sanding in a 5 gallon bucket of warm soapy water. once you complete all the phases of wet sanding, you can then buff the markers two ways. 1. orbital buffer, or 2. by hand.

    I used meguiars M105/M205 polish with a buffing pad mounted onto a griot's orbital buffer. I held the markers from the bottom while one hander-ing the buffer over the markers.

    if you decide to do it by hand, use lots of elbow grease and clean cloths.

    I polished the aluminum button screws the same way, but in a different fashion. for those who are crazy enough to polish 4 stupid screws, what I did was mount my drill in my vise, had the screws gripped by the drill chuck, spun the screws and polished them as if it was a ghetto lathe.

    after all of it, I washed the markers off with dishwashing soap and coated them in wax to preserve their polished state. my DIY will work with any marker/clear plastic bit i.e headlight, tail light. any questions feel free to ask

    before/after (before is after 2000 grit, don't have any photos of the markers in their original state)












    Last edited by susej1981; 01-07-2014, 10:12 PM.

    #2
    is my computer messed up, i cant see the pictures

    Comment


      #3
      Not just your computer...

      Comment


        #4
        brand new OE BMW housings, lenses, screws are only $21 each (complete unit) @ www.bmwmercedesparts.com...seems well worth it over all the work/materials above

        p/n #1:

        1991 318is --- currently not road worthy
        1991 318i ---- 308K - retired

        Originally posted by RickSloan
        so if you didnt get it like that did you glue fuzzy oil to the entire thing?

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          #5
          Originally posted by jrobie79 View Post
          brand new OE BMW housings, lenses, screws are only $21 each (complete unit) @ www.bmwmercedesparts.com...seems well worth it over all the work/materials above

          p/n #1:


          meh, I refinished my markers and tail lights myself using a similar strategy. I already had all materials including an orbital buffer and compound. Way more gratifying than just buying new.
          2014 Alpine White 335i MSport
          (Daily Driver)
          Full Mperformance Aero

          2007 Black Sapphire Metallic E92 335i (6MT)
          KW V2 Coilovers
          VRSF Catless Downpipes

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            #6
            for plastic lenses, I sand them down with 800 grit, then paint them with quality urethane clear coat, they come out looking better than new and they don't fade out.

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              #7
              fixed the photos, sorry for not getting it right initially

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                #8
                Do we know if these have any protective coating on the plastic that you are removing here? Maybe removing a UV coat or something that will make them degrade even fast this time around?
                2011 JGC daily, 1985 944

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                  #9
                  they don't have a uv coating

                  Comment


                    #10
                    Originally posted by jrobie79 View Post
                    brand new OE BMW housings, lenses, screws are only $21 each (complete unit) @ www.bmwmercedesparts.com...seems well worth it over all the work/materials above

                    p/n #1:

                    $42 dollars for something that is not broken isnt worth it.

                    Also, I used a similar technique, and finished the process off with a product called plastix, its similar to finishing polish and barrier. Makes them really shine.

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