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Height of Top-Hat:
There is no upper limit to the height that a top -hat can be made but
there is a lower limit and that is set by the thickness of the bending
beam.
With the Extension Bar removed the bending beam thickness is
15mm (left drawing). The thickness capacity will be about
1.2mm a n d t h e min imu m heigh t of a t op -hat will be 15mm.
With the Extension Bar fitted the effective bending beam width
is 30mm (right drawing). The thickness capacity will be about
1.6mm and t h e min imu m h eight of a t op -hat will be 30mm.
Minimum distance between reverse bends:
A reverse bend, sometimes called a “Z bend”, is where a second bend
is made from the opposite side of the workpiece:
The minimum distance between reverse bends is set by the thickness
of the bending beam as described above for “Height of Top Hat”.
To overcome the minimum distance limitation see the section on the
next page.
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