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another material
Peter,
Some where o this site is a picture of an ota that my wife knocked up to make a 6 inch newtonian. Essentially half inch wide quarter inch thick wooden strips with semicircular tongue and groove full width of the strip thickness,painted black inside and a sheet of fibre glass epoxied to the outside. Light,strong rigid and negligible thermal expansion.
Chris
Last edited by muletopia; 31-03-2024 at 12:52 AM.
Reason: missing word
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