Step 1. Cleaning off the paint.
The easiest way to remove the paint off a die cast is to use a paint stripping chemical. The chemical will usually begin to work in 10 minutes although this can vary quite a bit depending on the paint. (follow the manufacture’s instructions for best results).
Once the chemical has done its job, you can wipe away the chemical with paper towel and dispose. Rinse with cold water to naturalize the paint stripping chemical. Use a steel brush to reach the any paint that is being stubborn.