Wooden Template for Circular Coaster, Magnets and Cup Mat Sizes

Information

      I usually make small items for groups in my area and like to give them samples of what I have been thinking of making.  They often aren't sure what size the completed pieces should be, so I make several.  
I made this jig so when the final size is determined, I can easily run the blank discs through without the need for 4 different sizes of jigs.