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Machine Polishing Need help with Machine polishing

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Old 01-05-2018, 10:36 PM   #1
euge07
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motorbike windscreen

Anyone had any good results machine polishing black plastic windscreen on a motorbike?
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Old 02-05-2018, 12:35 AM   #2
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Anyone had any good results machine polishing black plastic windscreen on a motorbike?


I had to use a 4” pad and some Menzerna back in the day; haven’t done it for a long while though.

Plastic is a lot softer than paint, so any fine polish will do.


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Old 02-05-2018, 03:20 AM   #3
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Plastic is a lot softer than paint, so any fine polish will do.
+1. Plastic will load up the pad faster than paint so clean the pad often.
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Old 02-05-2018, 08:56 AM   #4
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I'm struggling with it to get a good finish




it is extremely swirled

tried sonax 04-06 on a green hex pad, then upped it to scholl s3 gold on orange pad which cut out alot of the swirls but I cant get them all out, tried a few passes with s40 on white polishing pad as well to try finish but there is still some left
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Old 02-05-2018, 09:04 AM   #5
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I'm struggling with it to get a good finish




it is extremely swirled
From these 50/50 images, I think you've obtained a good finish, but I think you're after a perfect finish
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Old 02-05-2018, 09:10 AM   #6
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From these 50/50 images, I think you've obtained a good finish, but I think you're after a perfect finish
sorry you are right, it is a huge improvement but I'd like it completely swirl free if possible
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Old 02-05-2018, 09:51 AM   #7
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tried sonax 04-06 on a green hex pad, then upped it to scholl s3 gold on orange pad which cut out alot of the swirls but I cant get them all out, tried a few passes with s40 on white polishing pad as well to try finish but there is still some left
are you using a DA? If yes switch to a rotary. if youre using a rotary, do a final pass at the lowest speed akin to jewelling, that should take care of the marring
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Old 02-05-2018, 12:43 PM   #8
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are you using a DA? If yes switch to a rotary. if youre using a rotary, do a final pass at the lowest speed akin to jewelling, that should take care of the marring
using a da yes, i dont have rotary but have a force drive polisher as well, so maybe switch to a finishing pad and some scholl s40 and use it?
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Old 02-05-2018, 04:38 PM   #9
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If you want perfection:
Wet sand with p1500
Polishing pad and polish on a rotary
Then the finest polish you have on the softest pad you have

Rotary is better in this case if possible

If not a rotary, then hand polish for the last step

Basically the same instructions as for plastic headlights.


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