Paint CLEAN & SMOOTH Lines, Every Time! 

This. This is all of it right here. So much better than thinning with water.

Wow

Just want to note: I’m sure you probably can use any fluid acrylic medium to pour to some extent (when you say “fluid medium” I’m picturing the liquid medium that’s usually just sold as “matte medium” or “gloss medium,” as opposed to “gels” which tend to be thicker)… I’m not sure exactly how it would turn out, because despite their thin consistency, those are generally made for adjusting the consistency of paint before brush-applying it (or using sponges or whatever else), though I doubt it would be catastrophic. Might have some problem drying weird when applied as thickly as in a pour, or it might dry too fast to be practical, or something like that- I’m not sure what the actual ingredient difference is)… But the medium we usually use in pouring is a distinct medium which is specifically sold as “pouring medium.” You can still get it in gloss or matte or sometimes satin or semi-gloss depending on the brand, but it’s different from the fluid mediums that get sold as just “matte medium” or “gloss medium.” And both are different from glazing medium, which is also a fluidy medium, but is meant to be applied far more thinly & transparently, for glazes. So I’m not sure if you meant one of these in particular, or if you did mean pouring medium specifically (I’ve never used it for anything but pouring, but I’m sure it could be useful for some other purpose). But in their ideal use-cases, they do all serve that purpose of thinning paint to a more fluid consistency without the drawbacks you mentioned of adding too much water & breaking up the binder. I’d guess that matte/gloss medium is more specifically formulated for the purpose of helping the paint flow from the brush & apply evenly, since it isn’t specialized for a different purpose, but that’s just my supposition.

Thanks for pointing that out. I stopped using water to thin acrylic paints because I read/saw warnings about how water can make acrylic paint fail because of the breakdown of the chemical bonds with water. I now use Golden acrylic airbrush medium to get really thin paints to tone my canvas without the worry of paint breakdown.

Much appreciated!

that's a good tip. it also helps while painting minis

SAME HERE! Oh my goodness, it was just like the most satisfying sigh of relief when he said that :D

I really appreciate it. I will say that more expensive liner brushes can take more handling without loosing their shape- bit at their price it’s not really worth it tbh

The expensive ones hold liquid longer. They also hold their shape longer. If you're not doing mop work, and your rigging brushes hold enough liquid for you, get cheaper. Only other concern is bristle shedding.

Especially how he blends with spray acrylic. That’s tough….

Once you get the oils thinned to the right consistency the brush will hold it for a long time and it will flow off that liner brush beautifully but it takes practice because it's different than the usual thick process. Good luck and have fun!

Yeah I like the Princeton brush packs!