![](http://photos1.blogger.com/blogger/1444/1707/320/4536.safe%20center.jpg)
![](http://photos1.blogger.com/blogger/1444/1707/320/4537.two%20centers.0.jpg)
![](http://photos1.blogger.com/blogger/1444/1707/320/4541.two%20centers.jpg)
A cylinder is turned on the first axis.
![](http://photos1.blogger.com/blogger/1444/1707/320/4544.two%20centers.jpg)
Then the shape is made on the first axis. The diameter of the two ends of the shape are of similar size.
![](http://photos1.blogger.com/blogger/1444/1707/320/4546.two%20centers.jpg)
Here's what it looks like after the first axis has been turned.
![](http://photos1.blogger.com/blogger/1444/1707/320/4552.two%20centers.jpg)
The blank is then placed on the second axis. A "golf club" shape is turned on both ends of the intial form. It's important for the edges to meet up in the transition between axis 1 and axis 2 where the largest diameter is found.
![](http://photos1.blogger.com/blogger/1444/1707/320/4554.two%20centers.jpg)
Once that spot has been found, the curve begins at that point and carries on to completion.
![](http://photos1.blogger.com/blogger/1444/1707/320/4555.two%20centers.jpg)
The other important spot is the transition on the narrow side of the spindle where the second axis meets the first axis. This spot is found in a shadow line as the piece is spinning. If you go too far you'll have a divot out off the first axis shape.
![](http://photos1.blogger.com/blogger/1444/1707/320/4556.escoulen%20class%20day%202.jpg)
Here's part of our class at work. From left to right: Scott Hogsten, Devon Palmer, Jean-François Escoulen, and Jim Burrowes (our assistant for the first two days). We were using mini lathes, which makes it more challenging to do the multi-axis turnings with a large piece of wood. My lathe wasn't mounted on a stand, but was sitting on a table. The vibration moved the lathe around and I had some interesting chatter patterns from the movement of the lathe and table.
![](http://photos1.blogger.com/blogger/1444/1707/320/4557.escoulen%20class%20day%202.jpg)
The rest of the gang (L to R): Chuck Kemp, Mike S (can't spell his last name), and Booker Brooks.
![](http://photos1.blogger.com/blogger/1444/1707/320/4558.wolfe.two%20centers.jpg)
Here are my first two attempts on two centers. This is really a lot of fun! Jean-François makes it looks so easy, but it's not so easy to do at first. It helps to have a solid color as a background so you can see the shadow lines a bit more clearly than you can against the bed of the lathe. I used a piece of white paper as a back drop, which helped a lot.
![](http://photos1.blogger.com/blogger/1444/1707/320/4560.two%20centers.pods.jpg)
The second exercise was also on two centers, but the transition was through a narrow "neck" of the spindle. This made the shape look like two seeds in a pod. The project starts the same as the last one - turn a cylinder before beginning the shape.
![](http://photos1.blogger.com/blogger/1444/1707/320/4563.two%20centers.pods.jpg)
It's important to know where the transition between centers begins and to work up to that point, but not beyond. You can't match the curves exactly, so a small ridge will be left after the second axis is complete. This is filed off with a rasp.
![](http://photos1.blogger.com/blogger/1444/1707/320/4566.two%20centers.pods.jpg)
The shape on the second axis is similar to that done on the first.
![](http://photos1.blogger.com/blogger/1444/1707/320/4572.wolfe.two%20centers%20pod.jpg)
Here's my attempt at this exercise. That small ridge is what needs to be carved away.
![](http://photos1.blogger.com/blogger/1444/1707/320/4570.rasp.jpg)
Jean-François brought a supply of these hand-made rasps, which are made in France. I bought a small one, and it's wonderful to use.
![](http://photos1.blogger.com/blogger/1444/1707/320/4581.bedan%20pencil%20sharpener.jpg)
Another innovative tool he brought was the bedan pencil sharpener. Works like a charm.
![](http://photos1.blogger.com/blogger/1444/1707/320/4587.trembleur.jpg)
Speaking of charm, or Charme, here's a piece of Charme I gave to Jean-François to try for a trembleur. This is also known as European Hornbeam - a favorite wood of mine to turn. I thought it might be a good wood for these trembleurs. After Jean-François tried it, he agreed. I sent a supply of these blanks with him, and I now have a trembleur for my collection. This is about 12 inches tall, and the details are amazing.
No comments:
Post a Comment