There are two methods to choose from:

1. Go to an art supply store to find spray paint, which is the street spray paint often seen in movies and TV. Then find a newspaper to cut out fonts and spray paint .Buy oil-based dyes or pigments (note that if it is pigment, you need to apply a fixing agent on the fabric in advance. You can buy it in general chemical stores. Mix it into water and use a brush to apply it to the place you want to spray). Inkjet printing Use an iron after finishing to prevent the color from fading, but do not wash it more than 20 times. (This method is cheaper)

2. Go to the chemical store to find waterproof spray paint, which is more direct. But the effect is worse than the former, and the font will appear. The hardness is serious.

In fact, it is more feasible to choose the oil-based spray paint method. You can buy some small packages and experiment. As for acrylic and textile paints that need to add blending agents, it is a bit reluctant to mass produce and do it yourself. , acrylic needs to be supported by a silk screen, because acrylic is in a glue state. Although textile coatings are liquid, the more fatal thing is that they need to be washed and saponified before they can be solidified. I hope the author will consider the cost issue and the actual effect issue. Choose the method that suits you.