For lengths of 380 – 600mm, the Backplate can be trimmed equally from
both ends so that the two captive wedges (cotters) remain in the centre.
Fit the Backplate as described above. Similarly, trim the Clamp Plate to
the same length, minus 5mm each end for clearance.
For smaller lengths, the Backplate may be trimmed as described above,
plus cut and joined in the middle to reduce the centres of the captive
wedges (cotters). The two cotters may be reduced to 150mm centres
minimum. Weld the Backplate sections back together and dress smooth
with a grinder. The Clamp Plate will also be cut and re-joined in a similar
manner, again allowing 5mm clearance at the ends.
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