The traditional style of wiper die, especially solid-bodied, in which the body is a rectangular block. The square-back style is recommended when the bending under high direct pressure, otherwise the half-round style is suitable for most other applications. Compare half-round; see wiper.
FREE Tube-Bending Guide Download:
A complete guide to the principles of the 4-Step set-up for tube-bending tools
This is a printable handbook showing how to implement in four standardized steps the “forward mandrel” set-up for rotary-draw tube-bending machines and establish process control over the so-called black art. The procedure is based upon the guiding principle that the tools make the bend and takes advantage of the inserted design of modern mandrel tooling.