First time wet sandind and rotary polishing

[pampos]

It was time to practice how to remove the orange peel effect from my car...
i am waiting for an order that contains 2500 and 3000 grit sand papers,6'' PFW and Meg's wool pad & diamond cut.So i used what i had at home and what i found in local market.
Meg's 1000 grit sand paper for wet sanding
3,5 '' PFW & Menzerna Power gloss compound on rotary
Menzerna RD 3.02 on orange LC 6''pad with rotary
Menzerna F106 FA on green LC 6''pad with rotary
Menzerna 85RD on black LC 5,5'' pad with UDM
i did only the hood and the right front fender.
So here are the pictures

The hood full wet sanded with Meg's 1000 grit sand paper



50/50 photos after the compounding/polishing steps







some pictures after the entire hood finished










and some pictures to compare the finished parts with the orange peel level of the rest parts






Then i took the car out the sun to check what i have done..i was disappointed and i have some questions...Those sanding marks need a wet sanding with less aggressive sand paper or they need more compounding with a bigger wool pad that i used??






Thanks for looking and all the advises are welcome....

[TimG]

Re: First time wet sandind and rotary polishing

Sweet!

IMHO, using a finer grade helps out in buffing it back up. Some tracers are still seen in the picts though.

[pampos]

Re: First time wet sandind and rotary polishing

Sweet!

IMHO, using a finer grade helps out in buffing it back up. Some tracers are still seen in the picts though.

so do you suggest me to wet sand it again when i will receive the 2500 and 3000 unigrit sand papers??
also is Diamond cut & Meg's wool pad good enough for removing the sanding marks or i should choose something else??

[TimG]

Re: First time wet sandind and rotary polishing

diamond cut is #85 right? (sorry cant remember) I tried 85+wool pad with great success. Why not do another pass(es) to clean up the tracers?
Thts what I did on a few cars (aftermarket paints) and came out great.

and off course cleaned up the holos with a milder cleaner polish (83,80/82)


Lets see what the pros got to say..

[pampos]

Re: First time wet sandind and rotary polishing

diamond cut is #85 right? (sorry cant remember) I tried 85+wool pad with great success. Why not do another pass(es) to clean up the tracers?
Thts what I did on a few cars (aftermarket paints) and came out great.

and off course cleaned up the holos with a milder cleaner polish (83,80/82)


Lets see what the pros got to say..

Thanks once again mate!!! I would do it as soon as i receive the order.Yes it is # 85 the diamond cut

[yalerd]

Re: First time wet sandind and rotary polishing

Yeah to remove those traces use something less aggressive, now that the sanding marks are gone you'll want to concentrate on remove swirls marks and holograms and using much richer oil products to make that paint pop

If you have a DA use it with M80 or M83 to see how it turns out.

[pampos]

Re: First time wet sandind and rotary polishing

Yeah to remove those traces use something less aggressive, now that the sanding marks are gone you'll want to concentrate on remove swirls marks and holograms and using much richer oil products to make that paint pop

If you have a DA use it with M80 or M83 to see how it turns out.

i will do that as the final step but i have to remove those marks first

[PorscheGuy997]

Re: First time wet sandind and rotary polishing

I would resand the paint with a higher grit (atleast 1500).

PFW pads don't have the cut in order to completely remove the sanding marks. Any one of Meguiar's wool pads will do just fine.

[Mike Phillips]

Re: First time wet sandind and rotary polishing

Then i took the car out the sun to check what i have done..

i was disappointed and i have some questions...

Can you describe what you're seeing?

Do you see deeper sanding marks or sanding scratches that didn't completely buff-out?

[J. A. Michaels]

Re: First time wet sandind and rotary polishing

I see the swirls left. Why not go with a #80, or #83 with the da to finish it out. Try a test spot first and go from there.

[pampos]

Re: First time wet sandind and rotary polishing

Can you describe what you're seeing?

Do you see deeper sanding marks or sanding scratches that didn't completely buff-out?

i am not sure what it was exactly but the sure thing is that it was from the 1000grit sand paper...it is my first time on wet sanding and polishing back to gloss so i am not sure.I can say that it was a combination of those two..some places where the scratches that didn't completely removed and on other places where deeper sanding marks...
i wet sand it again on the afternoon with 2000grit 3M (because the local Meg's dealer had only 1000 grit so i order the rest sand papers from abroad)and i polished it again using :
PFW 3,5'' and Menzerne PG
LC 5,5'' YELLOW and RD3,02 + PG
LC 5,5 WHITE and RD3,02
LC 5,5 BLACK and 85 RD
All compos by rotary
I wanted to use the Meg's Diamond cut with Meg's wool pad and finish with #83 and #80 but the dealer had them on his store and not on his shop so i order them from him to bring them to the shop to go next week to get them if he will find some time to go to the store and get them.Also he cannot sell me a pad without buying a gallon of product(#85,#83,#80 etc) because he import them as set.So i have to buy a gallon of polish/compound if i want to have a pad.My previous pads destroyed on the washing machine so i honestly apologize for not used Meg's products today,it wasn't mu fault : )
Here are the results

[Mike Phillips]

Re: First time wet sandind and rotary polishing

i am not sure what it was exactly but the sure thing is that it was from the 1000grit sand paper...

Chances are good that what you're seeing are the deeper sanding marks or sanding scratches that were not completely buffed out. This is because #1000 grit paper is too aggressive to finish with so after compounding, the shallow scratches are removed but the deeper scratches are left behind and now they show up to your eyes like a sore thumb.

Finish with a higher grit paper and do as best as you can to rinse the surface with clean water and rinse your saning paper and backing pad off in your bucket of water often.

As you sand, abrasive particles come off the paper and if they get trapped between the paint and the paper and you're sanding then this abrasive particle is going to gouge into the paint and leave a deeper scratch that we refer to tracers.

See this article in the Hot Topics forums...

Tracers, RIDS & Pigtails

That's why it's vitally important to work clean. Also, often times if you get a loose abrasive particle between your paper and the paint you can hear it and this would be in indicator to you to stop sanding and rinse the paint and rinse the paper and then try again.

The idea of the spray bottle is to spray the paint while you're sanding and the spray of water coming out of the nozzle will help to rinse away any loose particles.

[pampos]

Re: First time wet sandind and rotary polishing

Chances are good that what you're seeing are the deeper sanding marks or sanding scratches that were not completely buffed out. This is because #1000 grit paper is too aggressive to finish with so after compounding, the shallow scratches are removed but the deeper scratches are left behind and now they show up to your eyes like a sore thumb.

Finish with a higher grit paper and do as best as you can to rinse the surface with clean water and rinse your saning paper and backing pad off in your bucket of water often.

As you sand, abrasive particles come off the paper and if they get trapped between the paint and the paper and you're sanding then this abrasive particle is going to gouge into the paint and leave a deeper scratch that we refer to tracers.

See this article in the Hot Topics forums...

Tracers, RIDS & Pigtails

That's why it's vitally important to work clean. Also, often times if you get a loose abrasive particle between your paper and the paint you can hear it and this would be in indicator to you to stop sanding and rinse the paint and rinse the paper and then try again.

The idea of the spray bottle is to spray the paint while you're sanding and the spray of water coming out of the nozzle will help to rinse away any loose particles.

Thanks Mike.the problem is that we don't have every day water to use and today was one of those days..I tried to keep it as clean as possible with some sprayers with water, some buckets full of water,some MF towels to wipe it and some sponges to wet the surface as much as possible...

[InfiniteDetail]

Re: First time wet sandind and rotary polishing

Looks like a good first effort

After my initial experience, I concluded that I shouldn't go more aggressive than 1500 to start. It took me a really long time to get the 1000 grit sanding marks out. My approach is 1500/2000/2500, then M105 on a wool So1o pad on the rotary.

[pampos]

Re: First time wet sandind and rotary polishing

Looks like a good first effort

After my initial experience, I concluded that I shouldn't go more aggressive than 1500 to start. It took me a really long time to get the 1000 grit sanding marks out. My approach is 1500/2000/2500, then M105 on a wool So1o pad on the rotary.

Thanks mate..i will have it in mind for the rest car.....i will start with 1500 and continue with 2500/3000 before buffing..