800 ! ! ! ! !! ! !
Start with 1200 grit , very soapy water & finish off with 2000 grit with very soapy water . BUT you MUST polish with a G3 polishing compound to remove any fine scratching and this is before you apply any UV resisting varnish / paint / lacquer .
You are aiming for a like new or almost like new finish prior to sealing .
I know the score as I have done many headlights to ensure they pass their MOT
You can at a push , use a G3 polish with a mopping machine , BUT make sure you mist with clean water to ensure you do not overheat & mark the plastic & keep the abrasive particles mobile in the mop / sponge
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To stupidity & beyond
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