Here's my version of a brake disc wall clock. The clock was designed from scratch except for the caliper which I remixed from https://www.thingiverse.com/thing:3913102 and changed to the Lamborghini logo. Outside diameter of the disc is 170mm All the printed parts are included but you will also need 2 x 2mm by 10mm wood screws and a clock mechanism (ebay etc). I used PLA for this in Silk silver for the disc rotor, the numbers and the small nuts. Lime green for the calliper and hands, black for the brake pad, hub and logo. I printed the logo and numbers separately and used superglue to attach them later. The hub is attached to the disc rotor by using the nuts, once inserted I used a soldering iron to melt the back over like a rivet The calliper and pad are attached using the wood screws and the spacer goes over the centre of the clock mechanism.