Club Meeting: 16 Oct 2024
Report by : Peter Wyatt
Brian explained that he would show us “therming” (Art Liestman – on line) which is off centre turning multiple pieces of timber at the same time.
He had 2 identical circular jigs with inner tenon recesses for the pieces (that have tenons on each end) , that were to be turned, were placed. When put together, the 2 jig end plates with pieces in between looked a bit like a ‘cotton reel’.
The ‘cotton reel’ was put on the lathe and held with chucks at both ends.
The set up should be tight but with enough movement to allow to index turn the pieces.
You set the indexing that you want. Then you must move each piece to the first index line. When all 4 are setup, Tek screw through the jigs into the pieces. The screws should be off centre (to the pieces)
Start the lathe slowly, 500rpm, and speed up to about 1200rpm, or to what you are comfortable with.
Turn to the depth require. Bryan suggested that you make a template to set the depth. This will ensure even shapes.
When you are happy with the first setup, you take out the screws and set the pieces to the next index line. Replace the screws and turn the second part.
Repeat this 2 more time, and you should have 4 pieces the same off centre shape.
Bryan pointed out:
- Ensure the jig setup is always tight on the lathe.
- Remember to replace the screws
- Start the lathe slow and increase the speed slowly to your comfort level.