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Time to revive this thread. I've been back for a full month now, but so much work has piled up while I was away, that I haven't been able to make much progress until now.
The only progress worth mentioning is that I managed to keep one of my small polishing machines going in the evenings and I finished polishing a small batch of corrector lenses. Last year when I tried to get a couple of lenses BBAR coated, the cost turned out to be prohibitive, so this time I'm trying to bring the unit cost down by getting more lenses coated.
The small silicone mould for casting polishing laps worked very well.
The day before I left for my trip, my son sent off the GERBER file of the small PCB, that will live inside the secondary hub, to China for manufacturing. About ten days later my son emailed me that the finished PCBs have arrived. I was stunned.
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