From time to time, I am asked to make something. No drawing as very often the 'customer' doesn't know how to draw what he or she wants. All they want is for it to work. As engineers, we often have to lead the customer. For instance, I have just made an imitation Bugatti rocker box cover for a Triumph engine! No drawings, just an old Triumph rocker cover and a photo of a Bugatti engine and a big block of cast aluminium.


Note, the rocker box is too long for the milling table, so I had to machine one end, then slide it along. Careful packing, wedges and clamping was required to make sure that surfaces were flat and true. No drawing and a satisfied customer.