6
consideration in circle forming. Decide approximate length of material need. Use the
formulary “C=
π
x ID”(C is Circumference;
π
is 3.1416; ID is Internal Diameter).
Sample:ID=12”, operator need to prepare material length approximate 37.7” or
approximate length of material which need.
3.Push the up/down buttons to move the bending roll up/down for right position,
and press foot pedal to roll the sheet metal material.
