1.The material is beech. make the cylinder that makes the hole of 40mm for 60mm�~60mmL from the lathe.Next, I'm drilling the hole in the under with fosner bit attached to the threading set.

2.Tapping.W3/4*16dpi.

3.It cuts beautifully.

4.I exchanged the collet of the trimmer in ø6.35mm.

5.Special bit.

6.I use insertion for the centering and I set a trimmer at the center of jig.

7.Jig is placed between the stock vice of the workbench.

8.The point of the bit is put out about 0.8mm more deeply than the valley of the screw.

9.I insert a 19 mm stick. It become a screw when turning while pushing lightly.

10.The screw is beautiful. I think it is better than the die.

11.Because I had wanted to cut the screw in the root of the knob, the thread part and the knob were divided.

12.The right of the photograph is the knob which glued together a screw part in the insertion.I painted sesame oil.

I attempted to break a walnut.I think that it is nice to touch.The threading set is a good item.