New Paint Too Hard; Simple RIDS require wetsanding for correction

[Eddie6th]

Re: New Paint Too Hard; Simple RIDS require wetsanding for correction

The highest grit I could find here was 2500.I'm not sure if it is even unigrit.It doesn't say.It does have latex backing though.If you can get unigrit good quality papers,that's better.

I had a look at the paint Mfr's site.This must be quite a tough paint.How have you got on since?

[the_invisible]

Re: New Paint Too Hard; Simple RIDS require wetsanding for correction

Hi Mike Phillips, nice to see you posting on here again!!! Yes, you are absolutely correct, these are tracers I am having, not RIDS. I am not too familiar with these terms. But you are right, I am having problems with tracers, not RIDS.

Based on my assessment, these tracers are very shallow. I will exercise judgement when removing them using wetsanding.

What is the best way to avoid tracers? I already did my best at wetsanding and used 2500 grit paper to minimize damage. Will using unigrit sandpaper completely avoid tracers? I have decided to wetsand my 335i and this time I want to do it right with the highest quality paper, and soak them for three days in the softest hand soap available to mankind. Will that help?

Also, on my black daily driver, I have one small line of pig tails on the hood when I got it repainted for cheap. The paint job was great, but there was a small spot with a little pig tail. Is that removeable by wetsanding?


RGP, yes each time I tackle a problem I do it after a good night's sleep...

[RGP]

Re: New Paint Too Hard; Simple RIDS require wetsanding for correction

Not a solution, but merely a suggestion based upon my own personality and prior experience in such situations.

Personally, I'd remind myself that the problem will eventually be totally corrected at some point. I often grasp at straws going for a quick solution to a problem and more often than not, I end up exacerbating the situation.

I'd make a leisurely trip to your supplier tonight for whatever things you may want to try. Clear your head, try to relax and compose yourself, and leave any further paint correction attempts go 'til the morning when your arms and mind are more refreshed before you chance doing anything which you may later regret.

The totally worst of all scenarios is that the hood may have to be redone. So what. It's a hood, not brain cancer.

Do as I say, not as I would do!

[Mike Phillips]

Re: New Paint Too Hard; Simple RIDS require wetsanding for correction

Because I used non-unigrit sandpaper, I left some RIDS on the hood.

Not that it's a big deal but RIDS or Random Isolated Deeper Defects are usually caused by normal wear and tear and things like improper washing etc. These types of scratches run in all different directions.

When you wet-sand and leave deeper sanding marks behind they usually run in the same direction, (the direction you were sanding), and these are called Tracers.

See this article in Hot Topics

Tracers, RIDS & Pigtails

[the_invisible]

Re: New Paint Too Hard; Simple RIDS require wetsanding for correction

Hi Eddie,

Basically, the paint job was in dire need of a wetsanding because of orange peel issue. The orange peel was affecting gloss and depth. According to my new friend Shyneman the dullness of the paint job was a result of solvent trapped inside the clear coat, unable to evaporate. Also, the solvent trapped inside the clear coat is causing tiny burst holes on the clear coat, causing even more dullness. Shyneman recommended me to wetsand the hood to restore gloss and depth to the paint.

After wetsanding the hood, I realized that it was compulsory and I did not regret doing it. The result was awesome. Gloss and depth are BOTH better than OEM. I can even smell paint solvent coming from the hood, whcich is a clear indication that there is indeed solvent trapped inside the clear coat.


I left some RIDS on the hood because I wetsanded the hood with non-unigrit sandpaper. Because the paint is so durable, the RIDS require wetsanding to remove. Those RIDS are not even that deep. They are only as deep as the thickness of a piece of hair. Simple M105 application by hand is unable to remove those RIDS. I have already soaked some 2500 grit in some hand soap water to further soften up the paper. I will attack those RIDS today to completely remove whatever RIDS is left. If there are any more RIDS left, I will ignore them for now.

[Eddie6th]

Re: New Paint Too Hard; Simple RIDS require wetsanding for correction

Hi Invisible.I remember your thread a week or so ago about your new paint job etc. Why has it been necessary to do wetsanding? I'm just a bit lost here. Did you get some Rids since the paint job?

[the_invisible]

Last week I had the hood on my car repainted. Yesterday I started wetsanding the hood with 2500 grit sandpaper. I used M105 and an orange LC pad to remove most of the sanding marks. Because the paint is so hard, I had to give the hood about 6 to 7 passes to completely make it satisfactory.

Because I used non-unigrit sandpaper, I left some RIDS on the hood. On OEM paint, these RIDS would normally buff away using Ultimate Compound or ScratchX 2.0. However, because the new Sikkens paint is so hard, I had wetsand the RIDS with a 1"x1" piece of 2500 grit sandpaper to correct the RIDS caused by wetsanding. Ironic, I know. Some RIDS were removed via wetsanding, some were simply reduced to a visually acceptable level. What's worse is that after I wetsand the sanding marks, I had to give the area three or more passes of M105 to eliminate those sanding marks.

I performed wetsanding for as much RIDS as I could find, but after I put everything away and called it a day, I find even MORE RIDS that needed the wetsanding treatment. I am sick and tired of wetsanding out these light RIDS.

I employed this method and tried to use my hand to remove some of these RIDS by hand via M105, but the paint is simply too deep for some RIDS.


What should I do? Also, I think I am seeing some marring as a result of using M105. Since M105 is barely having any effect on the hard paint, what kind of polish should I use to remove those marring caused by M105? This is really frustrating... the tough paint is really taking a toll on me physically.

This is what I have to do to remove any RIDS on this durable paint job:


Notice the various wetsanding marks... these are simply for RIDS correction.


You can also see the nice gloss, reflection, and depth of having the hood wetsanded. That is BEFORE POLISH or LSP. With some polish and LSP, the hood would glow.


One possible solution is to resand a majority of the hood using unigrit 3000 grit sandpaper, as to remove as much RIDS as possible. But I want to avoid doing that if there is a solution to dealing with some RIDS. I removed as much RIDS as I could there's around maybe 5-7 spots left. Some are simply unnoticeable. Or maybe I could muster some energy tonight and proceed to removing as much RIDS using my current 3M 2500 grit sandpaper.