Color Sand

[wisconsinjimmy]

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Due to a huge blast of air on a very calm day DUST in the fresh paint, just on top as the paint had already set up and was almost out of the tack stage, I have discs that I bought from the shop here ranging from 800 up to 2000 question when using this on my DA I am going in the wet mode and spraying water with a tich of dawn soap how hard should I press down on the DA, I also am running at a very slow RPM so as not to fling the wet. Here is a photo of the trunk lid, 600 then 800 what did I do wrong

[style]

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Due to a huge blast of air on a very calm day DUST in the fresh paint, just on top as the paint had already set up and was almost out of the tack stage, I have discs that I bought from the shop here ranging from 800 up to 2000 question when using this on my DA I am going in the wet mode and spraying water with a tich of dawn soap how hard should I press down on the DA, I also am running at a very slow RPM so as not to fling the wet. Here is a photo of the trunk lid, 600 then 800 what did I do wrong

try one side hit it with 1k wet all with a block really good just to make shure you got out most of your600 scratch and to even out the panel you made look like a lake then again wet with 1500 then try and buff it and see how the shine comes out..

keep in mind that 600 on a da is gonna make your surface very wavy no matter the speed..try buffing it and post more pics..


llast second thought,da at low rpm even wet is a bad idea cause its not moveing material so say a piece of dirt comes out now its stuck under your pad and scratching your paint in tiny circles...go medium speed and lots of water dont use a da with less then 1500 for final finish...

[Pronage]

ha ha i remember when i first tried to prep a panel and thought a DA was level. It was on a black paint job and well i went swimming after that BAHAHA

But with color sanding i thought you did the 100 grit rule to 800 then jumped to 1000 then worked up to 4000 or is that just with some people?

[style]

ha ha i remember when i first tried to prep a panel and thought a DA was level. It was on a black paint job and well i went swimming after that BAHAHA

But with color sanding i thought you did the 100 grit rule to 800 then jumped to 1000 then worked up to 4000 or is that just with some people?

its the same as prepping you want a flat surface you have to block it now on new paint you can block it no problem everyday people use 600 or 800 to take out a run but generally you want to keep with 1500 with a da because its only cutting the orange peel just like following it with 3000grit only removes the 1500 scratch you cant use 3000 to level paint..

now on the other hand on a showcar you want it straight block it with 1500 then 3000 da is fine.. 1500 and finer should be done wet 90%of the time in case it pics up dirt it will be rinsed out right away that and it avoids those annoying pig tails,and not the red headed one that burns your dinner..

[wisconsinjimmy]

I will give it a go in the morning, will one of the half moon rubber blocks work, this paint is supposed to be flat (blitz black). I do have more then enough paint left to sand and reshoot the car.
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[Pronage]

its the same as prepping you want a flat surface you have to block it now on new paint you can block it no problem everyday people use 600 or 800 to take out a run but generally you want to keep with 1500 with a da because its only cutting the orange peel just like following it with 3000grit only removes the 1500 scratch you cant use 3000 to level paint..

now on the other hand on a showcar you want it straight block it with 1500 then 3000 da is fine.. 1500 and finer should be done wet 90%of the time in case it pics up dirt it will be rinsed out right away that and it avoids those annoying pig tails,and not the red headed one that burns your dinner..

HA HA ya those red heads can be a b----h

Ya color sanding is used to create a surface for the buff to adhear to right? so the higher grit you go the finner it looks untill a certain point in which the buff cant actually stick to it?

600 to 1500 if for surface leveling (because when you spray clear its going to have orange peel?)

[style]

I will give it a go in the morning, will one of the half moon rubber blocks work, this paint is supposed to be flat (blitz black). I do have more then enough paint left to sand and reshoot the car.
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id go with a dura block...if the paints flat then scuff the top of the dust nibs lightly with 1500 and leave it alone...

[Pronage]

I will give it a go in the morning, will one of the half moon rubber blocks work, this paint is supposed to be flat (blitz black). I do have more then enough paint left to sand and reshoot the car.

Wont color sanding give a flat black shine?

I dont know much about painting and such just seems logical to think so.

[style]

Wont color sanding give a flat black shine?

I dont know much about painting and such just seems logical to think so.

yup thats why i said only lightly scuff with 1500 grit just to et the dust nibs off..

[Pronage]

yup thats why i said only lightly scuff with 1500 grit just to et the dust nibs off..

Ahh thats what i thought. so more of a surface clean rather then a color sand?

[wisconsinjimmy]

Yup, no one ever said I had a good handle on shop talk, I might be better off to reshoot the car being all the chrome is still off and keep the door shut
One other thing what about those green or red scuff pads will they work?

[Bob K]

Anything you do by hand with abrasives of any kind will leave lines where the grit interacts with the paint. You may get by with Clear Coat Sanding Discs on your AirVantage sander used with a little water. Those sanding lines will all be mixed up and hard to distinguish. I don’t know about the flat black paint. I’ve never used it but I have sanded flat clear coat and it is hard to see where you sanded and where you didn’t when the base is a light color. Black makes things more difficult. After you sand it and something rubs the paint it will leave a polished mark that you will have to sand again, and you know what happens after you sand it too much, no more paint.

Bob K

[Len]

Anything you do by hand with abrasives of any kind will leave lines where the grit interacts with the paint. You may get by with Clear Coat Sanding Discs on your AirVantage sander used with a little water. Those sanding lines will all be mixed up and hard to distinguish. I don’t know about the flat black paint. I’ve never used it but I have sanded flat clear coat and it is hard to see where you sanded and where you didn’t when the base is a light color. Black makes things more difficult. After you sand it and something rubs the paint it will leave a polished mark that you will have to sand again, and you know what happens after you sand it too much, no more paint.

Bob K

You can't really repair flat or semi-gloss by sanding or polishing because you'll change the texture of the finish and it will show big time.

It's been my experience that flat and semi-gloss is really difficult to match. Luckily you can spray with the same gun at the same pressure with the same paint so maybe it can be sanded and repainted on the panels that need repair without repainting the entire car.

[wisconsinjimmy]

I decided to just reshoot the car, and this time I was real careful to get an exact measurment on the proportions, I could not get a cup to go 8-1 so I used the oz method, I first added the paint then the thinner and strained it into the cup andthen into the spare can, did this for the whole gallon. When I was ready to paint I then added the hardner 16oz of the paint (had reducer mixed in) in the cup and then added two oz of hardener to give me the 8-1-1 ratio. Went on just swell but here is what I did not like about this stuff.

:0Just put the final coat on the car using Blitz Black, using the 8-1-1 mix you had better have the car ready once you put in the hardner as this stuff starts to thicken like right now, I would also suggest you use an old gun or have a bucket of cleaner ready to drop the gun in and start cleaning. By the time I was done shooting the cup looked like it was sprayed with that box liner stuff. Never had a paint set up that quick following directions.