Sorry Mike, I don't see the point in a lengthy howto. There is nothing complicated about this and I think the pictures pretty much tell the story. Just gotta take one's time and use the right tool for the right job. Reading the instructions that come with the power tools helps too as does some experience using them; things like knowing when the wood will splinter, which blades are best for cleaner curved cuts, how to make an angled cut without the blade bending, how to keep the router steady, how to keep all your fingers, etc etc. You also have to weigh up whether it's worth the time & effort for the cost of $80 for new rings, and whether you'd be embarrassed to be seen with chunky wooden scope rings instead of slim metal ones.
I made these not just to save a few bucks but to gain some experience with the router. I must say I love this tool; very clean and precise cuts. It should work well for making altitude bearings for BIG Dobs.
