Can I recoat Slick Sand the next Day?

[uffdakev]

I attempted to spray on Slick Sand with a 2.0 tip(TCP Global from Amazon). It went on very thin. I had to make at least 2 passes on each panel to get coverage. This took me 3 hrs to get the first coat on the whole car. By then my arm was aching and I had to quit for the day. There is still primer showing lightly through some areas.

Can I recoat a second coat tomorrow (24 hrs) or do I have to sand first?

Also I think the gun is not working properly. When I fully compress the handle the pressure drops to zero no matter how high the initial reading. Is this the reason it it went on so slow?
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Kevin
70 Ghia vert

[uffdakev]

I called Evercoat today and they said I have to scuff it before applying another coat
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Kevin
70 Ghia vert

[buguy]

Yeah that stuff dries in like 2 hours at 70 degrees. And yes. With a 2.0 tip it should have gone on pretty good. Any idea what pressure you were spraying at?

[uffdakev]

I tried all pressures from 35 to 90. The pressure gauge dropped to zero whenever I pulled the trigger. I called TCP Global and they think it is defective. Amazon is giving me a refund.
I'm going to try and find a gun locally, scuff and reshoot. I'll probably run out of Slick Sand and have to rescuff. I will only do small areas at a time so I can get enough coats so I won't have to rescuff.
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Kevin
70 Ghia vert

[Air-Cooled Head]

This post in another forum, sounds similar to yours. I didn't read it all, but there may be some info you can use.
http://www.hotrodders.com/forum/well-my-slick-sand-night-didnt-go-so-slick-219708.html
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Everything known to man has been written.
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[buguy]

Many local paint suppliers will carry a 2.2-2.5 gun for around $60 if you make some calls.

[uffdakev]

Buguy,
I went to Wesco paint supply where I have been getting my PPG paint and they looked at me funny until I said I was shooting Slick sand, then they said they could order me one. I ordered one off the internet.

AirCooled,
I had read that post before I started and knew not to use the filter. I appears it was a defective gun. I will find out on the next one.
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Kevin
70 Ghia vert

[buguy]

Yeah you really dont need a good gun for shooting that stuff because it simply sprays like shit no matter what. I have found ways to get it to lay just a bit better, but it really doesnt matter much because your getting so much build from it and your going to be blocking it anyway.

I like to spray it at pretty low pressures to avoid getting much overspray. I dont have a regulator on that gun but I would guess its in the 14-17 PSI range. I also hold the gun a bit further from the panel than normal. This way the fan is a bit wider (its not much of a fan with this viscosity) and I can really watch it go on.

[jspbtown]

I cut my G2 (similar product) with 10% acetone to get it to spray a bit better and lay a bit flatter. It doesn't really kill the build properties either.

It does spray with a texture but if you use the guidecoat you can get it very smooth.

[uffdakev]

Ok I got my new gun with a 2.5 tip, still cheap but from a different company, and it is still going to zero when I pull the trigger. It puts on a lot more material than the last gun but it seemed to only splatter it on (super orange peel).

I have a Harbor Freight gun that I used for the DPLF so I thought I would see if it was the pressure gauge. It worked perfectly with the gauge from the new gun. (40 lbs at gauge, 20 lbs with trigger pulled)

I do have a 1.8 tip for the HF and I will try that tomorrow, but is it possible that I got 2 defective guns that have the same defect from 2 different companies.

Also Slick Sand says to thin it 10% with a fast Urethane reducer, would PPG DT 860 qualify?
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Kevin
70 Ghia vert

[buguy]

Nah no way you got 2 bad guns. Also with a 2.5 tip there is no reason to reduce slick sand. You may not think it, but even with only 10% reducer, it still cuts the build. I sprayed some today with a 2.5 tip and it really lays it on heavy. It does spray with a lot of orange peel, thats just kind of how it is. Do you have the material knob open all the way. I always (before putting product in) squeeze the trigger, then turn the knob in until it just brings the trigger off of its seat. Also be sure you have the air opened all the way on the gun if your using a regulator. With 15 psi, it should really be hogging it on. Dont be confused though, Its not going to spray out like the DPLF does.

If you are doing all that and its still not working right, try taking the regulator off and just run the air line right to the gun and regulate it with the air knob on the gun. See if that does it. I wish i would have taken a little vid of my spraying today to give you an idea. I probably spray 200 gallons of that stuff a year, so I could get you a video pretty quick im sure, but im off for the weekend.

[uffdakev]

Okay two screw ups and one success.

I tried my HF gun and a small batch of SS with reducer on a door. It went on like paint. I wish I could make my final paint job this smooth. Then I realized I was still using my 1.4 tip. So I switched out my tip for a 1.8 and got ready to mix a new batch. That is when I realized I hadn't added any catalyst to my previous batch.

I tried to wipe it off with acetone but it just smeared around and almost nothing came off onto the rag.

At least I feel comfortable that I have solved the paint gun problem, now any ideas on how to get rid of the uncatalyzed Slick Sand?
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Kevin
70 Ghia vert

[buguy]

Laquer thinner. And be ready for a huge mess.

[uffdakev]

Ok I sprayed SS with my Harbor Freight gun. My test patterns looked good with a smooth oval pattern. When I sprayed the car it looked like this:

Does this look normal?
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Kevin
70 Ghia vert

[buguy]

Thats a little rough. What size was the tip?

[jspbtown]

Did you stir & stir & stir? And then stir some more?

That is why I like to reduce it a bit.

[uffdakev]

I was using a 2.2 tip. When I did a test spray on masking paper it laid out smooth, but went on the car kinda splattery. I didn't think I needed to reduce it with a 2.2 tip.
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Kevin
70 Ghia vert

[jspbtown]

Well here is my two cents worth. And you will get LOTS of disagreement with it but it has worked for me on 1/2 a dozen cars.....

Crank up the air pressure and thin by 10% acetone.

Try it or not...it doesn't matter. I can tell you that my panels come out a lot better with a 1.8mm tip.

But the joy of it is that with a little block sanding and you are flat as can be.

Oh...one other question....what was the substrate on the panel? Bare metal?

[uffdakev]

Thanks, I only have one more panel to do and I will defineately try reduce it.
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Kevin
70 Ghia vert

[jspbtown]

And don't forget the guidecoat. Will all those lumps you want to make sure its 100% flat when you are done sanding.