Summary80mm opening should fit any single battery clockworks. Glue dial to disk, glue clockworks to back of disk, glue assembly to clock body Light support is required on this print.. Finished model was painted with gold spray paint. Printed in ABS @.3mm, 2 perimeters, two tops, two bottoms, 20 percent infill. Note: Ran out of filament at the end of print, and that accounts for the open face on the base. Thanks to noisekid for the male and female guardian lions..How I Designed ThisUsed Netfabb Studio Free to cut lions, then used Microsofts' 3d Builder to assemble and add clock assembly.