|Project by trasner||posted 05-11-2011 04:11 AM||4705 views||36 times favorited||11 comments|
I wanted a set of jumbo Cole Jaws for my Nova chuck. My mini Cole Jaws are too small and I didn’t want to buy the regular Cole jaws because they are pricey and they will only support a bowl up to 10 inches. This set, when expanded, are 15 inches which fit the 16 inch swing on my Jet 1642. This was a relatively easy project and they work great. I used 3/4 inch plywood, measured a circle with a compass, spaced vertical lines 22.5 degrees apart, placed my regular jaws on the center of the plywood to locate holes for drilling to attach jaws to chuck (M6 screws). I then cut the circle out on my bandsaw, screwed it into the chuck, and trued it up on the lathe. I cut shallow horizontal lines 1/2 inch apart with a parting tool. I then drilled holes at the intersections of the vertical and horizontal lines, cut into 4 equal segments on the bandsaw, sanded it down, and finally placed 8 rubber stoppers in the appropriate holes for my current bowl project. (I used the existing rubber gaskets from my Mini Cole’s but I had to get longer screws to pass through the 3/4 inch plywood. Spare gaskets can be purchased at Woodcraft, Rockler, etc). I used wingnuts to fix the gasket screws on the back. Overall, I had about 3 hours of work in this project, spare plywood, and about $5 worth of screws. Satisfaction for a good homemade jig is priceless.
Thanks for looking,