jerryoltion

Trackball telescope optics - Jerry Oltion

Rainbow Net & Rigging has a 16" mussel float that's good and stiff and it's only $17 Canadian (as of early 2009). .... To make it I bent a piece of galvanized metal strap into the right shape, drilled it so the deck screw would fit through without binding, and padded the face that touches the mirror with a piece of rubber ( glued ...