I received some plastic bushings free with my Ryobi Router. I tried one out for the first time, ever, using a template for a handle I'll put on a tray. I used a 1/4 rabbit bit with the 5/16 inch bushing and a template. The bushing worked fine for a bit but as I went, it melted out to about 1/2 inch of the center. I don't have any smaller rabbit bits but I guess that's what I needed.
Are plastic bushings completely useless or was it just me?
Richard