How To Make A Jam Chuck For A Wood Lathe

Im not an engineer or a woodworker.

How to make a jam chuck for a wood lathe. Every time you use this jam chuck make sure the mount on the scroll chuck is straight true lined up with your mark and firmly against the shoulder all the way. This particular jam chuck is used for reverse chucking or finishing the bases o. Drill a hole deeper than the length of your headstock threads but do not let it contact the four-jaw chuck.

Screw chucks with larger parallel threaded screws require you to drill a pilot hole first but give a superior grip. Go to your local building supply store and find a cheap plunger mine was 3. The simplest home-made chuck is a waste block of wood glued to the bowl blank and used for holding.

A Jam Chuck is an essential tool used by wood bowl turners to reverse remove and shape the tenon or foot of a bowlLearn how to make a Jam Chuck in this vi. This gives you a way to center the bowl. A donut chuck is similar to a jam chuck.

This avoids leaving screw or chuck marks on the piece or having to increase the size of the blank to achieve the same result. The two pieces are bolted together with long bolts. Above Sorby Patriot chuck with 2in spigot jaws.

Then you make another piece of wood with a hole in the middle. The bowl is placed inside the donut so the bottom protrudes through the hole. Then take the handle off and use it for a jam chuck on your lathe mine gets the most use when reversing hollow forms and removing the tenons.

Making the four jaw chuck I used my BigPrint program to print a 11 template of the main part of the chuck and cut it out of Baltic birch plywood. The size of the jaws completely dictates the size of the tenon used on the wood bowl. Carefully cutting out the main part on the bandsaw.