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Zero Paint 2k clear coat questions...

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  • Member since
    October 2015
Zero Paint 2k clear coat questions...
Posted by Kelvinator on Sunday, August 21, 2022 10:01 PM

Q1. The example given in the package is 10 mil of Clear + 5 mil of Harden + 2 mil of Thinner (10% rounded up to 2 I guess). By the same scale, does using 2 mil of Clear translate to 1 mil of Harden and 0.3 mil of Thinner ( or 1 mil rounded up) ? 

Q2. Do we need to wet sand the base color to a smooth level but not necessary polished before the 2k application? 

Q3. In a case of decal, do we run 2k clear coat first on the body before applying the decal, and then another coats when done? 

Q4. How to avoid cratering during the process? Some said the syringer I used causing the contemination and should use a dropper instead.

Q5. What is the correct PSI for the application? I have seen 34 PSI, 30 PSI , 27 PSI or 20 PSI across the internet.   

  • Member since
    June 2014
Posted by BrandonK on Monday, August 22, 2022 9:04 AM

Your ratio for mixing the clear is whatever the manufacturer calls for. In your case 2 to 1 on the clear to hardener and 1 to .2 on the thinnner. The thinner can be adjusted to your liking for spraying, but be careful, you can make it run far easier as it gets more thinned.

The base coat should always be as smooth as you can manage. No flaws, blips, hairs, fisheye, etc, those WILL show in the clear when done. Paint on cars is 90% prep work. Get the base cost smooth and error free, doesn't need to be gloss, just smooth. The clear will do the rest. Then clear with 2K. Remember, this is NASTY stuff and you must wear protection, vent very well and use a respirator. DON'T even spray this without precautions!!!

Decals go over smooth surface and under the clear coat. If you put them over it they will look like they float and will lift off over time.

Make sure your work is clean and free of oils and other contaminents, those cause fisheye, etc. I use pipetts to move 2K from container to mixing cup, then a NEW pipette for the hardener and again a NEW seperate pipette for the thinner and retarder as well. Never reuse anything except your Airbrush. Pipettes are super cheap by the truckload on Amazon, get some. Mixing cups are also super cheap. I use cocktail straws for mixing the paints and clears and toss them.

With clears you can kinda fog them on and to work correctly they must go on WET, you can't allow it to have a fade that dries and them keep spraying, it just doesn't come out very nice. Smooth wet overall, but not too much to run. It takes practice. 

Pressures can very, but with my setup I use 20 ish PSI due to my syphon feed brush I spray my clears with. You can use less with Gravity feed brush. The key is to keep the edges wet as you work so the clear goes down nice and smooth. When your clear has hardened up over a few days or a week, unless you use a dehydrator, you can then wet sand and polish it out to a mirror finish.

Really nice auto paint takes a great deal of work in prep, paint, sand, repair, sand, clear, sand, polish, admire. There are no shortcuts. You won't like your work if you try to just through color and clear on it and call it done. There is far more work to nice paint than that. I spend more time on the paint and body then I ever do on the assembly and finish work. Good luck.

BK

PS a good rule of thumb is to get some plastic spoons and use them to test on. Paint them with the same primer, paint and clear you are using on your kit. When you get them to look like you want and you didn't screw it up. Then move on to your kit. Better to waste a spoon than strip a kit and start over. Ask me how I know.

On the bench:

A lot !! And I mean A LOT!!

2024 Kits on deck / in process / completed   

                         14 / 5 / 2  

                              Tongue Tied

  • Member since
    October 2015
Posted by Kelvinator on Monday, August 22, 2022 10:05 AM

Thanks BrandonK for the reply. I got this 2k Clear sitting on the shelve for over a year yet didn't have gut to use it until 2 days ago. Although those Youtubers made it sounds easy to use, in fact it is less forgiving that Mr. Hobby Super Clear and Tamiya Clear in term of sanding and polishing. In theory you don't have to if the final coat is near perfect. The 2k Clear will hard like a diamond once cure and therefore the margin of error is near Zero.

Mistake I made were I skipped the test part on spoon and now my second kit is on the way. I "polished" the base coat ( thought it will be shinier) which led to the crater effect and the 2k clear never sticks. Then I mixed too less of reducer which caused the gummy paint. 

  • Member since
    June 2014
Posted by BrandonK on Monday, August 22, 2022 11:28 AM

One more step before I paint is I always wash the parts in Dawn dish soap and blow dry them. Then any residue or contaminents are gone. I use 2K for my cars and have learned to have the paint underneath flawless, not glossy, and then it comes out very nice. 2K does not require sand and polish after drying, but there will almost always be a spot or two the need further attention. Fortunately, it is hard as nails and fixing issues with it only requires some effort to that spot. Good luck.

As you can see here, the paint is very shiny, but it is not perfect as you can see in the reflection. It is ever so slightly orange peeled. I left it this way but I could have wet sanded and polished it out and it would be even better. The level of work you apply will show in the end.

BK

On the bench:

A lot !! And I mean A LOT!!

2024 Kits on deck / in process / completed   

                         14 / 5 / 2  

                              Tongue Tied

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