Create your own dice tray with lid and rolling mat. This is an excellent way controlling your important dice rolls without causing havoc on your carefully set up board currently with more than 10 customizable parameters.Step 1 - Selecting your personal settings: Most of the settings are self-explanatory however the Smooth Radius, Tray Style and Lock Style may require a little explaining. Step 2 - Printing: When making the dice tray the lid and mat are optional. Step 3 - Tips & Tricks Should you experience a configuration that does not work or something that the model is missing then just write an I will look in to it.