G'day all
I am currently about to write about the Southern Cross KX-B, so I
thought I would discuss mower blades.

Reversible blades were quite popular in the 1950s.
That reign came to an end with the advent of fluted blades,
when catchers became popular and readily available (in about 1960).
Fluted blades were not reversible.

Southern Cross did offer a catcher for the KX-D.
However, extra lift was not generated by a fluted blade but by
a central twist. It is the angled blade that gave some lift.
The blade was reversible - because when you turned the blade over
the cutting face remained the lowest part of the blade.

Note the differences in the models.
It appears the KX-B and KX-D used the angled blade.
The KX-C appears to be flat (because no catcher was offered ...?)
The KX-B had the most modern design - in lowering the drag
of the bolt and nut and using modern plastics.

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vint_mow, you have given members some sound and clever advice on
replacement parts for the wonderful Southern Cross. Thank you!

All very Blade Runner.
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Jack