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For the AB mount, located between target nests A and
B: Squeeze the carbon tube together with the aluminum
tube sufficiently to feel motion. Then release. The
kinematic mount should click into place, ensuring that it
has been properly seated.
For the BC mount, located between target nests B and
C: Again, begin by squeezing the carbon and aluminum
tubes together. However, you may not feel any motion.
(If you don’t, the mount is not in its home position.)
We don’t recommend that you go through this process each time you set up the bar. It is just an exercise so that you’ll
know how the mounts should feel when seated in their home position. Rather, you should know that the AB kinematic
mount will always be in its home position unless the mount itself fails. The BC mount is the one susceptible to being
moved out of home position through rough handling or shipping. Generally, all you need to do is hold the end of the
carbon bar (at the C end), and wiggle or twist it gently. If it is not in its home position, you will be able to feel some
motion, indicating that it is not seated in its home position. If this happens, twist the carbon tube or pull the tubes
apart, as you did above, to reseat the AB kinematic mount.
If you experiment a little you will understand the feel of the mounts and be able to quickly tell whether the AB mount
is seated, while still treating the length artifact gently.
Follow this action by pulling the two bars apart. Again,
the BC kinematic mount should click into place, now
being properly seated.
