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Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

A DIY version....

63.150.97.2

I found a scientific supply store online selling bags of assorted concave/convex lenses for something like $3 a bag. I had purchased a few bags and a box of ball bearings to make my own rollerblock. And I was just thinking along the line to put lenses on the topside (like Daruma IIIs) to add more stability. Will try this tonight. Cost per set of three is less than $5.


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