Nodebundle for playing with nodes

 From:  Barry-H
7777.1184 
Hi All,
created this nod after reading this thread http://moi3d.com/forum/index.php?webtag=MOI&msg=8986.1
Having originally done the calcs on a spreadsheet I wanted to see if it could all be done with the node editor and it's
a good way for me to learn how some of the nodes work ( still lot to learn )
I have been working on 2 options the first being the one posted which adds the helix to a core this gives the slot bottom a curved shape.
Option 2 which subtracts the helix to get the slot thus the slot bottom will be flat more like it would be machined.
Cheers
Barry