Aluminum block on wood lathe. My goal is to create a sphere jig, (sounds so much better than a ball jig). First things first, I bought the One Way drill jig at the symposium, in Phoenix this year, with the thought of mounting a router. I never thought I would be using it on aluminum. This picture shows my first attempt at making a "T" washer to use to bolt the sphere jig. The second picture has the jig repositioned, parallel to the bed ways, I like this position much better, as it allows me to plunge to the depth I require. Then I reposition it, toward the center by + 1/8" or so. Also you need to play with the speed of the lathe. I believe I was some where around 250-300 rpm. This piece is a cut off, I never measured the thickness. it is just thicker than the 2 enclosed bearing I plan to mount. Also it's thicker because I wanted to add girth, to ensure more rigidity. This picture show the center knocked out. I used the router to go as thin a
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