Mark wrote

>The male and female beams will have a couple of bands
of built up resin/graphite applied where they overlap
when extended. This will give plenty of clearance when
telescoping to prevent jamming.

Do you mean a narrow band at the very end of each part
of the beam?

Is this as good as UHMW plastic? I imagine uhmw to
have a bit less friction, wear less on the beams
(since it is softer?), be less durable, easier to
change when worn out. Less chance of jamming since it
probably has less compression stiffness than epoxy and
will also be worn down easier where there is humps.

What do you think, did you consider it, and what were
the reasons for using graphite/epoxy instead?

Sigurd




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