its probably been posted before but ill ask anyway,i have a bmw e46 as my daily driver ,when i bought it 5yrs ago i could tell it had been machine polished and in certain light the swirl marks look terrible, wots the best and easiest way to remove these,do i use like a finer grade of a g3 product or can i use a polish i have bought a polisher to help cut down the effort but do i use a sponge or a wool bonnet cheers

 

use g10 in straight lines not in curcles

 

is this with a sponge if so wot colour will i have to polish after that

 

this mite help you a loads ov info


http://www.detailingworld.co.uk/forum/index.php

 

Bmw so use Menzerna, works best I find for such hard paint.
What polisher you got?
Will need most aggressive polish Menz do.

 

ive got are rotary sander/polisher made by draper,would i have to use a sponge on this and if so what grade of sponge?

 

Rotary? You don't fuck about then, got a PTI?

 

mite sound daft mate but wots a pti?

 

a pti or ptg is

pti = paint thickness indicator
ptg = paint thickness gauge

 

As hard as bmw paint is, I wouldn't like to use a rotary on it without a pti/ptg.

 

i would never use anything on anything without a PGT these days, but then i do do it all the time now. Just for piece of mind.

I remember working on an alfa once with a PC, a couple of days later my replacement pgt came though so i went back and tested the paint and it was 56microns in some places and over 300 in others.