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Home > Classifieds > Astromart Classifieds > Telescope Making > Classified #156989

For Sale: Aluminum Trunions 8.75" diameter

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I have two pair of aluminum trunions which would make excellent side bearings for a dobsonian. They are 1" wide (maybe 63/64"), 8.75" diameter and 13/16" thick. The sides may need sanding (unless you like the look of the cut - I do) and the bottoms (bearing surfaces)are silky smooth. These trunions will not flex whatsoever. They are slightly more than half-circle in circumference (see picture). There are some tiny indentations on the bearing surface (probably where the machinist held piece to cut it) which I have polished to remove any burrs. I will tape the bearing surface before shipment to protect it. I am asking $30/pair + shipping or best offer.

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