With the paint not sticking then there's the problem. I have no experience with MM acrylic primer but from what I hear it's not too great. Im confused as what to do since I am use to plastic and pewter minis and these are proving hard to paint. It was a week or a month later and my artwork was still sticky! But most newcomers to the world of arts and crafts don´t know how … What Materials Can You Use Acrylic Paint on – A Full List Read More » Archival is not the only property I look for in a substrate. I make 24″x36″ paintings and the finished painting is a lot lighter, cheaper and easier to work with than gallery wrapped canvas. Latex-based paint is easy to use, is less messy and doesn't require specialty products for cleaning up. It like oil spots. Acrylic paint is probably the most widely used paint for crafts and art projects. Using oil paint on plastic is ideal if the item is decorative and gets little use. Acrylic Paint not sticking. The easiest way to determine if acrylic paint has gone bad is to smell it. Paint won't stick to entire canvas. Love the colors … It's very easy for artists to get stuck with a single paint and sometimes we fear change. I normally coat canvas with white acrylic and once dried, then paint. Be sure your vinyl is clean before applying paint, by washing it with soap and water and rinsing well. Every painter has different styles and techniques, so what works great for your friend or instructor may not be the best for you. The surface was so hydrophobic that any liquid (no matter what consistency) would simply run off of it. Object handling: If the model will be touched often, it should be painted with enamel/oil paint.Acrylic paint will need special sealers to allow for repeated handling. Use latex paint on frequently washed or outdoor items. I tried with out primer and with primer and both times paint has trouble sticking to the mini. So I washed all the minis with soap twice, even used an old toothbrush to get all the areas. The shelf life of acrylic paint is anywhere from 2 to 5 years if the tube has been opened and upwards of 10+ years if the container is sealed. Guess I'll go buy some gessum. In the end, I ended up mixing some white glue and dish soap into the paint. I couldn’t believe my eyes either. Acrylics don't always hold up as well to repeated handling as other paints, and they work better on surfaces that allow air through, like wood and paper, than they do on plastic. And for good reason, it is easy to use, you can get acrylic paint pretty much everywhere, most acrylic paint is non-toxic, and it is quite cheap too. Watering down the paint made things even worse. You can also use a primer between the vinyl and the paint. This has just recently started happening to me. If your vinyl surface is clean, the paint or primer will adhere to the vinyl, rather than … Acrylic paint can be used on plastic, but it is not specifically designed for this use. Yet, if it's not working the way you want, there might be a better option out there. You can scrape it, sand it, the paint will not come off. Because of its hard surface, it tends to crack over time. Paint straight up wouldn't work... the paint didn't even want to leave the brush for a quick visit to the plastic. I know exactly what you are talking about! https://homeguides.sfgate.com/paint-adhesion-failures-82770.html Acrylic paint sticking to it is NOT a problem. They both bond fine to Badger Stynylrez primer and that primer sticks well to plastic. Paint will not stick to a dirty surface. Expired acrylic paint will tend to have a sour, aged smell that could be the result of excess moisture where the paint was stored. Little use it, sand it, sand it, sand it, sand it, sand it sand! 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