detail of an sls 3d printer, 3d printed gears parts

iron monochrome wheel vehicle black white art tire sculpture engine bumper drawing photograph detail sls printer printed parts gears view selective laser sintering printing process used produce pedagogical engineering school made out pa12 model modelling printing technology automatic automobile cogwheel component design engine engineer engineering equipment formlabs formlabs fuse gear gearbox gearing gears gearshift gearwheel grey industrial industry machine machinery mechanic mechanical mechanical mechanics mechanism nylon nylon 12 pa12 parts performance powder precision proto prototype rapid prototyping shaft sls transmission wheel workmanship workshop