OBSESSION you think people are obssessed with hair in cattle, look at this
here's a pic of a bridge my brother in law designed and had made from a liquid molding process. he's a design engineer. he's making a 3 level N scale train layout of the feather river western pacific railroad famous Y section. his car set has the california zephyr, GP40 locomotives and rail cars. the car in the pic is a pullman for the western pacific management. on the bridge are rivets that are in relief of the bridge surface texture. took 3 attempts to get it down.
ladies, his whole FRONT room, not the garage or the basement or some building downtown is the layout. all guests must bow down to the train set. there are several bridges using this technique. the whole thing is run by a computer with canned programs to run multiple engines and switching. he bartered for payment of services from the foundry for these little guys.