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Find tube balance point with all optics in place, including eyepiece. Cut sides of rocker box with vees,
allowing at least 25 mm clearance at bottom, plus thickness of plank. Cut two pieces of plank 5 mm wider than tube diameter. Drill hole for pivot bolt in the centre of one.
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If desired, edge vees with iron on Contistrip material.
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Cut 30 cm of plank for plinth; mark centre and scribe 50 mm radius circle. Mark out 60 deg positions
with compasses at same radius; press in dome headed drawing pins or tacks at 120 deg positions. Fix
three blocks of wood underneath for it to stand on.
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