Mercury-Cell Battery Adaptor

thingiverse

A simple 'battery adaptor' allows four LR44 batteries to be used in place of a discontinued PX-32 cell. The PX-32 has a voltage of 5.6v, while the LR44 stack will produce 6v. For some cameras, this is okay (i.e. my Yashica Electro 35), but for others, the over-voltage may affect metering adversely. PX-32 dimensions are as follows: diameter = 17mm and height = 44.5mm. LR44/SR44 dimensions are: diameter = 11.4±0.2 mm and height = 5.2±0.2 mm. Printer settings: * Printer: HicTop 3DP-12 * Rafts: No * Supports: No * Resolution: 0.2mm * Infill: 20% Notes: Ideally, this should be printed vertically to ensure strength in the small cutouts that hold the battery. However, when printing vertically, the final millimetre knocked over the print, so it was printed lying down. As a result, one of the spring holders snapped off on first use. Despite this, it works. A 4mm brim was used to ensure the adaptor stuck to the bed, as there is not much contact area with the bed otherwise. To complete the adaptor, thread an 8mm wide piece of aluminium foil from the base of the battery compartment to the base of the adaptor.