About this 3D model

This is a reproduction of a Campbell & Co 'beehive' lens for its range of vintage marker lights.They hardly-ever turn up for sale online. So even though I don't know how to make the 'indented steps' inside, you can add them before you print the model (this must be 3D-Printed in resin). This can be printed in either red, amber, green, blue, or clear depending on which application!