Welcome to the forum Trav! For making your star in a circle you can use a circle jig but will have to hand chisel the star shape. To build your circle jig get a piece of 1/4" Masonite(hardboard). When using a guide bushing here are things to remember: The cut you make will be the thickness of the router bit. You have to add the difference between the bit and the guide bushing twice to the size of your circle. By way of example: You want to make a 3" OD circle. You will use a 1/4" plunge cutting straight or spiral bit. Say you are using a 1/2" collar. The difference between the bit and the guide bushing is 1/8" (on one side of the bit) and you add that for both sides of the circle (1/4"), so your template must be a 3-1/4" circle. Draw and cut out your circle making sure you have nice smooth edges. Fasten your template to the wood using double sided carpet tape and route your circle to the depth you want. Hope this helped.
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Mike
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