Can a water jet cut multiple layers of steel?

The true power of the waterjet is realized once you stack multiple sheets together. This project is a prime example. The University of Louisville's trademark L was cut out of 18 gauge cold roll steel stacked 4 deep. A typical feed rate for 18 ga. steel would be around 25 inches per min. (IPM). In this case we were able to slow the machine down to 15 ipm resulting in a combined feed rate of 60 ipm for a single layer of 18 ga. Thats an increase in produce of 140%. We are still not up to a lasers 120 imp for a single layer but considering we only have on table load as apposed to 4, we are not far behind.

For more information about waterjet cutting cold roll steel go to Cobaltdm.com