Brittle materials

This page contains information from before 2010. It is left here for archival reasons only.  Although in most cases, the information here should still be relevant and useful, please be aware that the information contained on this page may be out of date.  For the most up to date information please navigate back to the home page.

Some additional pointers:

  • Consider starting the abrasive and water flowing while the cutting head is off the material and then moving into the material from the side, to avoid piercing. This makes it less likely that the part will crack during the pierce.
  • Avoid having lots of pierce points in your part.
  • Use low pressure to pierce the material. This also can prevent cracking on the pierce.
  • Place a sacrificial material on top of the material you are going to cut. This gets the abrasive fully flowing before the jet hits the material.

You can cut almost any form of glass, even bullet-proof. You cannot, however, cut tempered glass (unless you anneal it first).

Dragons cut from Black Granite, Bullet-proof glass, and Marble.

Dragons cut from black granite, bullet-proof glass, and marble.


Related Articles

Laminated materials 
When cutting laminated materials with a waterjet, you need to use some techniques to keep the water from getting between the layers and ruining the material.

Cutting glass 
A discussion about how to cut glass with a waterjet to minimize broken and chipped parts.

Material thickness 
A discussion of how thick a waterjet can cut.

Different piercing methods
A discussion of different methods of piercing you can use, some of which work well with brittle materials.