Opposite to Pledge, anyone?

Why not Mr. Color clear flat? That's what I use.

Jay

Thank you all for you kind help, I order the Mr. Color because I am using the paint from that manufacturer, however I appreciate all your input

There are cans of acrylic clear flat at hardware stores. It is pretty thick- needs to be thinned a LOT.

Pledge/Future/Kleer/etc cut with small amounts of Tamiya X21 Flat Base, will turn it mat or semi, depending on mix.

X21 is an opaque past you add to gloss to get it to mat/semi-mat down.

You don't need 10% to get it mat though, I mix up a batch in a 35mm film canister, test spray, & adjust +/- if needed.  

I have used it with Original Kleer, but not the newer ones, so test first!

I use Gunze H30.

Tojo72 don't know that brand very well, I will read about it and maybe give a test flight, thanks for the tip.

Thank you so much Chris I like the Tamiya brand, I will check them out.

I airbrush Modelmaster Lacquer Flat

I assume you are asking for a matte varnish.  I've used Tamiya XF-86 flat clear, W&N flat clear & Vallejo flat clear.  I prefer Tamiya and W&N to Vallejo.  Vallejo doesn't spray well.