|Project by Jim Jakosh||posted 09-07-2012 06:31 PM||3057 views||15 times favorited||21 comments|
I have a project in progress that is going to require some slots routed in a curved arc so I stopped to build this addition to my plunge router to swing and cut on a curve. I added some features for the future for most any size up to 12” radius. I made the base to fit the router out of 3/8” Lexan and cut a hole in the center to match the one that accepts the standard bushings. I also made a plug for the center from which to measure with a tape or a caliper to set the radius very accurately. The screw body for the pivot center is turned to .200” as is the pin on the center insert. You just add .200” to the radius you want and set it with big digital caliper.
The adjustable extension is made from 5/8” maple plywood and is threaded for 1/4-20 screws.
. I need to come up with stops for the arc. I may just clamp blocks next to the base for the router to bump or eyeball it through the clear base. The maple is coated with clear matte spray finish.
It is simple but effective. It really works slick…..................Jim
-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!