Q: 10" six point primary cell

Someone asked about six point cell before and as I am in the same
situation I will continue with more questions.

The plan is to use three aluminium bars, with "hinge" in the middle.
Should I put small bolts in the end of bars and then glue the mirror to
them with silicone? Or should I glues the mirror directly to the end of
the bars? What about the strength of the bonding, will the small patches
of silicone, even smaller with the bolts, hold the mirror?
--
Lauri