make your own....go to hardware and see if they can cut ya a 1 1/2" square....mark quarter of an inch from right corner (mark with a T for top) and then rotate right and mark all the way around, connect the lines top to bottom....I have a package of square templates I bought somewhere and marked the 3" one this way. We want to see the mini when you get it done....the picture is of 3 ½ and the 6 ½