There are two types of routing in the circuit board industry. One has to do with creating artwork and the other is to route out shapes using a milling bit in a high speed routing machine. The routing referred to here is the mechanical cutting out of shapes in hard and soft materials like plastic or aluminium.

This service is useful for those that are producing prototypes or short runs of goods that require meters or switches to be incorporated in the product. There is no limit to the size or shape that can be milled out. Below is examples of shapes that can be cut out. Most routing is done with a 2mm bit. This leave a slightly rounded shape on the inside of right angle corners. Depending on the material and how much one wants to spend, smaller bits can be used. But mostly this rounding is not a problem.
 

Stylised speaker starburst routed into zippy box Rectangular cut out for meter or switch & special effect cut out for no particular reason other than to show what can be done.

Plastic case with two rectangular end cuts to house modular telephone connectors. Box shown without lid on. Lid or bottom of case can be routed with any shape or size. End cuts as shown have nice sharp right angles in the corners.  The examples are but a brief glimpse to give one an idea of what can be done. Feel free to discuss your needs with us. There is absolutely no obligation.  Of course the lid or the sides of the box can be screen printed. See Screen Printing also.