21 Sep
2011
21 Sep
'11
7:05 a.m.
BTW, though I've never built a wooden tube for the telescope, I have made many wooden forms for fiberglass tubes. It's essentially the same process, only the form is made with hollow bracing for the optical path, instead of solid bulkheads. I use the "coopered" method and either lathe-turn to final OD (ID for a fiberglass form), or hand-work if too large for the lathe.