The ruler-ruler method is simple. It's two rulers taped to each other. One ruler acts as a spacer and the other is a straight edge. What you do is mark your acrylic where you want to cut. You take the ruler-ruler and tape it to your acrylic so that the straight edge is right above the line you want ot cut too. You then take the acrylic with the ruler-ruler still stuck to it and send it through the router. The collar on the router bit will run along the straight edge ruler making a perfect straight cut. You have to make sure that the ruler is exactly wher you want it on the acrylic before you cut. You also have to make sure that you dont move it. I use a, I forgot what is called, but its a right angle thing. I used the body of this tool to line up the ruler-ruler. I acheive the rounded/ knifed edge,... I use a thicker ruler as the spacer. Heres the ruler-ruler I am using now,...Originally Posted by Draeth
Got to page 22. There you will see how I cut the windows for the enclosure. I used the same method. I also show how to use it with the router. There are more pictures of finished cuts using this method. I have to take some pics of how I line it up with the marks on the acrylic. Im going to try and do that today.