How To Thin Acrylic Paint For Pouring: Beginner’s Guide

Last Updated on April 11, 2024 by Masha Eretnova

I used to do pour painting with premixed pour paint – it means the brand already thinned the acrylic paint with a special medium for me.

But if you want to be more professional about pouring and premixing any colors you want, you can’t rely only on pre-mixed paint. You should learn to thin acrylic paint for pouring at home.

It is quite easy and there are many pouring thinning mediums available, but only a few of them I can recommend: because of their performance.

Get pouring medium

The pouring medium was specifically designed for acrylic pouring, it improves the flow and does not affect pigments or color intensity.

It is a liquid medium, most of the time milky white and it has a composition very close to acrylic paint binder – so when mixed with the paint, it makes it stronger.

The optimal ratio is 1:1 pouring medium to paint but certain brands have different compositions and they suggest a different ratio, please check the label.

The best consistency is similar to honey, so even if you don’t follow any ratio strictly, simply rely on the visuals.

How To Thin Acrylic Paint For Pouring

Pouring mediums to thin acrylics, I recommend:

Why we can’t use water to thin acrylic for pouring

While water works well for thinning acrylic paint for canvas, it isn’t the best option for pouring because it breaks down the acrylic paint composition and makes it watery.

How To Thin Acrylic Paint For Pouring
My Acrylic pouring (Dirty Cup)

In pouring it will result in colors that spread too much and too thin, less viscosity and the consistency will be too watery, while we need honey-like liquid.

Water can be added along with Floetrol sometimes, but it is not necessary and I would avoid that.

Water makes pouring mix less controllable and it may look very different while wet and while dry, including less intense colors.

A great example is a pour I did above – I added water and you can see how the colors are pale, break, and spread too much. I don’t recommend water for pouring!

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