What Is The Best Clear Coat

That depends on quite a few things... what paint are you using for your color coat? I would stick with same brand personally... you can always polish the clear coat...

Personally I am a big fan of Testors lacquer clearcoat.  It has a really good sheen, works over both enamel and acrylics, dries fast.  I have been using it for about half a century.  I think I will be stocking up.

Since I fear for the loss of Testors paints, I am trying other things.  Quite a while ago I tried polyurethane clears.  Work okay but they go on awfully thick.  I used spray cans.  The stuff is available in regular cans but I have not yet tried it in my airbrush.

I also found Rustoleum has clear acrylic sprays.  I bought both gloss and matt.  They do seem to work okay, and will be my backup if Glosscoat does disappear.

For a gloss clearcoat, I have been using Intermediate Gauzy Agent Shine Enhancer lately with excellent results.  Shoots beautifully from my Paasche H airbrush with no thinning necessary.  I clean the airbrush parts afterward with Windex.  Not sure what its long-term durability is though (things such as cracking and yellowing a few years down the road, which are a problem with some of the acrylic clearcoats out there) since its so new.  I also use MRP lacquer clearcoats of various sheens (they have 4), and they cure much quicker and harder than anything else I have tried.

Here's a summary of my experience, others may differ and may have better ways of clear coating glossy auto subjects:

I've had my best luck with Tamiya TS-13 lacquer clear coat rattle can over either a Tamiya lacquer gloss color base coat or airbrushed matte base coats from Scalefinishes or Zero paints. The Tamiya lacquer works best when sprayed with multiple light coats in 5-15 min increments with a final heavier wet coat after 2-4 light coats. Lacquers can be guite hot (chemically reactive) so test whatever you try first on scrap plastic and be careful with lacquer clear coat over enamel or acrylic. Also avoid wet coats over decals unless you have multiple light coats that have fully dried and cured. If spraying the TS-13 clear coat over a gloss Tamiya lacquer base coat, try to spray the clear coat within an hour of the base coat (or wait a month minimum to apply the final clear coat), otherwise the base coat may crack or craze (particulary metallics).

The two-part '2K' urethane clear coats are amazingly glossy and cure super hard/ non-sticky but are very toxic/ carcinogenic so I would avoid them unless you have a "closed ventilation" breathing set-up (filters on a 3M face mask are not enough protection!!!).

Having a tough time finding Testor's Gloss Coat in a spray can, Amazon has a kit with four cans but I'm not spending $35 plus shipping, I only need a can. Is it Testor's Lacquer Glosscore in 3oz. can ?? Everyone else please keep sending recommendations/advice.

I hear great things about Testors Wet Look.  I have some but haven't tried it yet.  What every you try, be sure to test.  And be sure to let your paint's fully dry/gas out before clearcoating.  This was Tamiya primer, Tamiya blue and Tamiya Clear, apparently too soon

I have had some success with Future floor wax as well

mic53mlb

Having a tough time finding Testor's Gloss Coat in a spray can, Amazon has a kit with four cans but I'm not spending $35 plus shipping, I only need a can. Is it Testor's Lacquer Glosscore in 3oz. can ?? Everyone else please keep sending recommendations/advice.

 

Looks like Hobby Lobby has them.

https://www.hobbylobby.com/Crafts-Hobbies/Model-Kits/Paint-Brushes/1260T-Dullcote-Spray-Enamel/p/1045

I'll second two previous suggestions, Testors Clear Cote and Gauzy

You should have a look at Liquatex high gloss varnish it's the smoothest highest gloss I have ever used, except for auto clear.

In all honesty your best clears are going to be 2 part automotive clears, but they are not the most user friendly, a bit caustic as well, and you are limited to what paint you can shoot them over. I've never used it, but aas far as hobby paints, I hear much good about Tamiya clears. Testors enamels yellow alot, the laquer not so much.

Eaglecash867

 

 

mic53mlb

Having a tough time finding Testor's Gloss Coat in a spray can, Amazon has a kit with four cans but I'm not spending $35 plus shipping, I only need a can. Is it Testor's Lacquer Glosscore in 3oz. can ?? Everyone else please keep sending recommendations/advice.

 

 

 

 

Looks like Hobby Lobby has them.

https://www.hobbylobby.com/Crafts-Hobbies/Model-Kits/Paint-Brushes/1260T-Dullcote-Spray-Enamel/p/1045

 

That is their enamel version. i tried one can and did not like- very slow dry.  I still love the lacquer version, though.

Lacquer version right here.

https://www.activepowersports.com/testor-spray-3oz-glosscote-1261t/?utm_source=googleshopping&utm_medium=cse&gclid=CjwKCAjw7rWKBhAtEiwAJ3CWLFdSIULjesE2ScUNuVHKmzdDTPgmCLegwpYtX6HIJysfWkkxKC2t7hoCj9AQAvD_BwE

Ya the Liquitex is quite good, goes over about anything. I tend to use the Satin more than the gloss, I feel it flows as good if not better and has quite a gloss itself and if you want more gloss just buff it up.. But in thin coats it's good over flat paints to gain a luster to interior parts. With acrylic paints you cam mix it right in, very versatile. Not cheap,look to get on Michaels coupon program, sometimes you get a 40% off coupon code.

Another clear shiny coat is Rustoleum lacquer . Test first what you put it over. I don't get the acrylic laquer and haven't tried their 2x clear yet but others are doing well with those in another forum I vist.. I get the lacquer with the big black chair on the label, which if you need to buff at all it's easy to buff up. I've used that for years and in wood working. I suspect it's nitroceluous lacquer which always did buff easy.

All that said many people like the Testors lacquer mentioned in another post, we don't know how long they will be around for but people like it. Decades ago I used the clear enamel which was great but yellowed over light colors.

Spray cans I mostly decant and airbrush these days though. That Rustoleum lacquer goes well from the can in relatively low humidity days. Dog days of Aug aren't your friend anyway with clear coats generally speaking.

I keep it easy and use Tamiya TS-13 spray can.  Works perfect everytime, and I'm happy with the amount of gloss.

I find the 2k stuff too shiny, and way to toxic for my liking.  

I use the liquatex gloss, satin, and matt and have not had any bad reactions at all over many types of finishes. The Matt is interesting in light coats it gives a dusty look to my 1/72 aircraft wet coats give a matt apperance.

See this article right here in FineScale.com; it covers several of the best clearcoats for scale model cars.....