Q&A for How to Thin Acrylic Paint

As long as the paints are still in fluid form, you can just add water to thin them, then use as usual.

No, acrylic paints do not need water added, but some artists add water for a watercolor look/feel or for a thinner paint consistency.

Best approach is to use painter's masking tape. Use two strips and set them side by side with the opening between them the width of the line you want. Best way to apply the acrylic paint is by using an airbrush. Apply quick thin coats with it and let them dry between applications for a few minutes until you get the depth of color you are seeking.

You need to use a water-based product. Otherwise, it will make your paint run and thin out, even if it has dried.

Probably not. It's just like dried up plastic. If you try to melt it, it will just burn.

Light should be represented by softly blending the surrounding colors together with light paint, but make sure to keep your contrast levels high to differentiate.

For the best result, you can get glass paint to paint on the wine glasses.

You can't. Dried acrylic paint can never be recovered. Neither water nor heat nor thinner/medium can recover it to usability.

Depending on how thick the paint has become, you can use a little bit of water or clear medium. If the paint is too dry, there is nothing you can do. Acrylic paint sets like plastic when dry.

Methylated spirit will soften dried acrylic paint with no effect on fabric dyes.

You can use acrylic thinners to thin the paint, also water can be used. This will thin the paint to a consistency of your choice. Only add a small amount at first as it will thin very quickly.

Add just the tiniest bit of thickening gel or make a cornstarch and water thickener. If your paint is already thick, then great. You might also want to thin it down.

This is a cool and hard effect to create. Try using water or paint thinner. For water, make sure not to add too much or it will be very very watered down, which will not be any good. If using paint thinner, follow the directions on the bottle.

Add more paint or, depending on the amount you made, allow it to sit out for 10-30 minutes. This will allow for some of the water to evaporate. Then try adding more paint.