Putty is one of the most useful things you can have, especially if you’re modifying or customizing your Gunpla. Basically there’s three types of commonly used putty: basic, polyester and epoxy putty. Each has different properties and applications. Basic putty Basic putty like this one by Tamiya comes in a toothpaste-like tube and is grey in color. This is the softest and most malleable of the three types of putty. How to use: Squeeze out a little bit on a mixing tray. Add a few drops of thinner (for laquer-based paints) and mix. Use a toothpick or equivalent tool to apply the putty to the desired spot. Because it tends to sink in as it dries, I usually apply a lot more putty than what appears necessary. After it dries, file/sand/scrape away the excess putty. Good for: Filling up small and shallow gaps and imperfections e.g seam lines or scratch marks. Can also be used to create a rough surface.