How To Make A Jam Chuck For A Wood Lathe

Then you make another piece of wood with a hole in the middle.

How to make a jam chuck for a wood lathe. Aligning the bowl is easier if you turn a series of lines in the bottom piece of wood. A donut chuck is similar to a jam chuck. Above Sorby Patriot chuck with 2in spigot jaws.

This avoids leaving screw or chuck marks on the piece or having to increase the size of the blank to achieve the same result. You start with a large piece of wood on a faceplate. The bowl is placed inside the donut so the bottom protrudes through the hole.

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. Once the jaw ring is complete it is cut into quarters making the four jaws we use on the chuck. Carefully cutting out the main part on the bandsaw.

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. A piece of threaded rod will go into each of the four slots.

This video is a step by step process of making a jam chuck for a wood lathe. 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. Sep 10 2018 - Explore Eds board Jam chucks on Pinterest.

Works great and is super cheap. Secure the setup with the tail center and turn the tenon and outside of the bowl concentric. Rotate the bowl by hand and using the tool rest as a reference center the bowl between its two widest points as shown.