Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work.

 
 
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Default How to change diameter of rolled sheet

I have to bend roll a sheet into cylinder using rollers placed in shape
of pyramids. The diameter coming out is quite large so i want to
decrease its diameter. How can i do it? I have to change the roller's
or readust them or is there any ratio between the roller size and
qutcoming diametet.

 
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