What is a waterjet cutter?

A waterjet utilizes a high pressure stream of water to erode a narrow line in the stock material. To cut a wider range of materials from tool steel to titanium to foam, a granular (typically garnet) abrasive is added to the waterjet, increasing the cutting power. Because the abrasive is added at the nozzle, it is simple to switch between water only and abrasive waterjet cutting. This flexibility greatly enhances the versatility of a waterjet machine, as it can easily switch from cutting ½” (1.27cm) foam gaskets to 4″ (10.16cm) titanium brackets.

To cut a wider range of material, a granular abrasive (typically garnet) is added to the high pressure waterjet stream, increasing the cutting power. Because the abrasive is added at the nozzle, through the mixing tube, it is simple to switch between water only and abrasive waterjet cutting.

The waterjet cutting machine system consists of three basic components:

The Table
The table is an X-Y nozzle mechanism with garnet hopper attached and catcher tank below.

The Pump
The high pressure pump provides pressurized water for the cutting process.

The Controller
The controller uses software for system operation, motion control, and nozzle positioning.

Source: www.omax.com/learn/waterjet-cutting