How To Make A Jam Chuck For A Wood Lathe

Lathe running to make sure it is straight.

How to make a jam chuck for a wood lathe. Im not an engineer or a woodworker. For a 1-14 x 8 TPI headstock drill a 1-18 initial hole and tap with a 1-14 x 8 TPI wood tap. Carefully cutting out the main part on the bandsaw.

The simplest home-made chuck is a waste block of wood glued to the bowl blank and used for holding. The size of the jaws completely dictates the size of the tenon used on the wood bowl. The two pieces are bolted together with long bolts.

Next invert the bowl mounting the tenon in your 4-jaw chuck and re-turn the bowls interior. You can make servicable screw chucks yourself out of wood on your lathe. Above Sorby Patriot chuck with 2in spigot jaws.

Rotate the bowl by hand and using the tool rest as a reference center the bowl between its two widest points as shown. I work in an officeI cant teach you something new everydaybusy however if you trust in me you can be the best wood. All you need is a faceplate.

Then you make another piece of wood with a hole in the middle. Once the jaw ring is complete it is cut into quarters making the four jaws we use on the chuck. Above Jam chuck held in Vicmarc chuck.

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. Secure the setup with the tail center and turn the tenon and outside of the bowl concentric. Screwchucks with a pointed small screw enable quick mounting of small blocks of wood - you can just screw the block on while the screwchuck is on the lathe.