Cole-jaw extenders

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Blog series by BuckeyeDennis updated 04-13-2021 09:54 PM 2 parts 1420 reads 5 comments total

Part 1: Fixturing an out-of-round bowl

04-06-2021 08:42 PM by BuckeyeDennis | 3 comments »

I’ve been an avid woodworking hobbyist for quite some time, but I’m still a novice when it comes to turning. On my third bowl I ran into a bit of a challenge, and came up with a workholding solution that I haven’t seen elsewhere. But I don’t know what I don’t know, so I’d appreciate any opinions and suggestions from you experienced woodturners. This particular woodworking adventure started when the rough-turned applewood bowl in the pic below dried a full ½” out of round. The tenon ...

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Part 2: Making the extender segments

04-13-2021 09:54 PM by BuckeyeDennis | 2 comments »

These jaw extenders are so easy to make that they hardly need any instructions. I’ll let the pictures do most of the talking. Cut a square piece of plywood to the desired extension-jaw diameter. This will be the diameter when the jaws are closed. Lay out centerlines, diagonals, and the OD. With the jaws fully closed, clamp the chuck and cole-jaw assembly to the workpiece, aligned as shown. Transfer the jaw-extender mounting holes to the workpiece using a transfer punch. ...

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