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Old 28-09-2017, 05:39 PM   #1
waqasr
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M101 Not Removing 2000 Grit?

Im not new to wetsanding but this one has me confused.

I painted this wing and bumper and have come to wetsanding and correcting now. Flattened with 2000 grit only which made quick work as there wasnt much orange peel.

To buff it up Ive used M101 and Lake Country Purple wool, a very aggressive combo but is necessary for wet sand removal.

Panel looks good, even up close, but get real close and I can still see my 2000 grit mark but the panel has been corrected, so its not hazy or anything but there are still lines which must be from the 2000 grit. You really wouldnt notice these unless your an inch from the panel and looking at it from the right angles.

Im suprised m101 and wool arnt removing it, ive given it 3 good hits and its still there. It not in the primer or the basecoat. Could it be the sandpaper? Though Its good quality Starcke Matador which was soaked for a while before sanding.

Looks fine here
IMG-20170928-WA0001 by joe blogggs, on Flickr

20170928_123958 by joe blogggs, on Flickr

20170928_124119 by joe blogggs, on Flickr

20170928_154054 by joe blogggs, on Flickr
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Old 28-09-2017, 06:33 PM   #2
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Wet sand in the oposite diraction with 2500 or 3000 grit. Those 2000 sanding marks need to be refined.
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Old 28-09-2017, 06:58 PM   #3
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See this Is my thinking too but Im just being lazy, Ive got the paper, upto 5000grit! but m101 is supposed to be able to remove 1200grit!, hence my confusion.
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Old 28-09-2017, 07:04 PM   #4
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As A&J has said next time use a block ig you hadn't this time,when sanding as you may have sanded unevenly,pressure is very important,
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Old 28-09-2017, 07:09 PM   #5
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I always use sanding blocks, on this occassion I used my meguiars foam block. Like I said im not new to this, I just thought M101 would have no problems removing the 2000 marks. Im going to try meguiars papers and see what happens.
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Old 28-09-2017, 07:17 PM   #6
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Have you tried a heavy cut foam pad like you've said and I agree the combo you used is aggresive,is that original paint by the way?
I presume you're using a rotary?
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Old 28-09-2017, 08:09 PM   #7
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Purple Wool is the heaviest cut pad I know of, unless there is a heavier wool pad available? But I was sure the pad and compound are aggressive enough.

Its not original paint, I painted it myself with a UHS 2k clear I thought Id try out, its been dry for roughly 40 hours now but it should still be fairly polish able unless its is a very hard clear.

One thing is the bumper is correcting up fine and not showing any of the 2000 lines, but the wing is, different substrate materials I guess.

But again its supposed to remove 1200grit marks? On plastic it has, on metal its not cutting it..pun intended :P

Im curious to try out the newer farecla g3 compounds to see how they compare to compounds used more in detailing.
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Old 28-09-2017, 08:56 PM   #8
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You will be far better off using a closed cell foam cutting pad. M101 doesn't like wool or microfibre pads at all bud.
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Old 28-09-2017, 09:13 PM   #9
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Ive used it with LC Yellow cutting pad, but cant remember if it was closed or open foam, though that would create some serious heat. 101 has always performed fine for me with wool. But what pad do you recommend, whats the most aggressive closed foam pad available?
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Old 28-09-2017, 09:27 PM   #10
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You got a yellow compounding hexlogic pad or a scholl spider, Purple Compounding Pad or lake country yellow pads and the cyan pad.
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