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If you want to know the absolute minimum tool set that will get you by, I built my 10" dob using nothing more than a jigsaw, a screwdriver, and a hand power drill.

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I have barely started on my travel 8" project, but I am hoping to complete it with a drill as my only power tool, with no jigsaw or router. The trick is to find already formed circles for the alt bearings. My wife had an old round CD case that she was going to put on craigslist for free, so I grabbed it. The top and bottom were 3/8" particleboard circles of basically the size I needed. I sanded one side of each circle, glued them together with Titebond II (clamping with five tiers of bricks), and then cut the resulting 3/4" circle in half with a hand saw. Another source of wooden circles would be small round tables that one can find on craigslist for $10-20, or maybe even for free if one waits long enough.

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Coulter Odyssey 13.1" split-tube
Coulter Odyssey 8"
Home-made 7.8" F/4 dobsonian travel scope
Home-made 68mm F/5.3 achro (typically used as finder on 13.1")
Skymaster 15x70
BPTs4 8x30
32mm Plossl, 30mm Rini, 27mm Kellner, 13mm Hyperion, 6mm TMB/BO Planetary, Owl 2X Barlow
Palm TX with AstroInfo and RescoViewer

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