Hello! New to FOG (although I've read search results for years haha) and new to owning the OF1400. I see that Festool offers handful of copy rings that snap into the base of the OF1400, but all I can find are metric. Wondering if any imperial copy rings are available. Main size I'm looking for would be 1/2" ID with 5/8" OD, for use with a 1/2" upcut spiral bit for template routing. Right now I'm using the bushing adapter that came in the kit, but wondering if dust collection would be better with the Festool copy ring.