Have you ever done sun printing? We have done it with sugar paper in the past, this time however, we have been making some acrylic sun print t-shirts. The weather was perfect over the last week to make these, hot and very sunny.
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To do your own acrylic sun print T-shirts you will need:
- Cotton t-shirts
- Acrylic paint
- Cling film
- Wooden letters/shapes etc
Mix the paint you want to use with some water. It should be 1:1 ratio of paint and water. I used 1 tablespoon of paint and water, which was plenty.
Then cut out some cardboard to go between the t-shirt. Wrap the cardboard in cling film. This is to stop the t-shirt from sticking to the cardboard and protect the other side of the t-shirt from the paint.
Next soak your t-shirt in water and wring out all the excess water so that it is not dripping wet. Place the cardboard on the inside of your t-shirt. Start to paint on the front of your shirt. The paint will bleed slightly because of the t-shirt being wet, but don’t worry about that.
Take your t-shirt outside and place on a flat surface. Finally put your objects onto your t-shirt. We did put the objects onto the t-shirts inside, but trying to transport it outside without moving or dropping pieces was a challenge.
You will need to leave it into the sun until it dries. When it is finally dried, take your objects off of the t-shirt and see your finished product.
The science behind it
When the sun heats up the uncovered parts of the t-shirt, the water starts to evaporate, and the paint begins to dry. As this water starts evaporating, water and paint from under the blocks starts to move into the dry areas. Eventually, all the paint gets drawn out from under the blocks and you are left with the unpainted impressions of the shapes.
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