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I started work on the carbon fibre sandwich tube and I'm very happy that I managed to get good quality 3mm Coremat. When I made the last two CDK tubes it was impossible to get the good stuff and I had to use whatever was available at the time. The main problem was the uneven thickness which required extra work and the result was still not as good as I would've liked.
I designed the DK so that one CDK tube can be cut in half to make two DK tubes.
Also I started work on a second primary mirror, this time using good quality glass from Schott.
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