How did he make this?

[PeteM]

http://www.steveg769.bizland.com/id6.html

be sure to watch the video clip.

pete

 

[NCPete]

beautiful, crazy!

 

[DaveO]

Magik, lasers and a little Voodoo. I thought I had an idea until I saw the center core out of the outer helix. All I can think it his methods have a lot to do with the narrow slit in the outer helix form. It is definitely done on a ornamental lathe mill. I am sure that we will never find out exactly how it is done....otherwise he wouldn't have an exclusive.
Dave

 

[Phil in Apex]

Wow!!! That is pretty amazing... I can't imagine how he did that with traditional tools...

 

[rhett]

There was an artical in woodwork magazine about two years ago about a man from England who was making helical spirals. Only his were about 20' tall. There is a jig mounted to his lathe with a circular sawblade which rides on helical gears. Definately an engineering feet. The lathe spun extremely slow maybe 1rpm and made the cutter move in the desired direction with exact repeatability. The gear ratios determine the amount of spiral and so forth. My gesstimation is he makes a fat spiral and with the same gear ratio cuts into the middle with a ball mill. Then adjusts the gears and cuts a piece to fit into the hole. Very amazing indeed, it is rare to see something that is actually new being done with wood.