About this 3D model

When I paint individual bits or sub-assemblies, I use a piece of cork or wood. Why isn't there a way to use a painting handle instead? This holder is a a disc designed to mimic a 32mm base to make it securely fit in a painting handle with a series of pegs arranged around it. The pegs all have a small recess to hold a small blob of blutak. Using one or more allows you to hold and secure bits or almost any shape. For batch painting heads you can arrange them all facing outwards and simply rotate the holder as you repeat steps.