In this video, it is to work with 4mm thickness and 145mm width steel strips, and produce flights with inner diameter 102mm and pitch 260mm, cut is automatic.
If you are interested in such continuous spiral flight making machine, welcome to contact with me freely as the followings:
Email: [email protected]   
Cell/Whats App: 0086 15617575581 
Skype: evazhao06