Penny farthing - 3d model for assembly. By printing all models on a 3D printer, you can assemble a model of an old bicycle. Some parts are assembled with glue. To assemble the wheels you will need to use paper clips with a diameter of 1mm to 1.4mm. In the downloaded files you can also find 3D models of devices for bending paper clips. Height of the assembled model 192 mm.