For experimental work I use hangers or bearings made of sheet brass or copper, bent at right angles for strength and capped with a box. The main part of the bearing A is shaped as shown, and the box B consists of a small piece cut from a brass rod and drilled for the size of the shaft. The box is soldered to the top end of A and the base C to the bottom end. When a large metal base is used for a certain model, the part A is attached directly to that base and the part C need not be used.

Ill: Sheet-Copper Support with a Base and a Shaft Bearing Soldered to the Ends

The bearings can be made in different heights, each of which will demand a corresponding size and thickness of the parts. Sheet brass or copper, 1/32 in. thick, is about right for a bearing 3 in. high. - Contributed by W. E. Day, Pittsfield, Mass.