Embedded Files
⚠ Warning ⚠
⚠ Warning ⚠
The information below is meant as a supplement to, not a substitute for in person training.
Do not attempt to operate this machine without completing the in person safety training.
Waterjet Rules and Safety Reminders
Waterjet Rules and Safety Reminders
Safety Glasses are Required at all times while operating the Waterjet, even while programming!
In person safety training is required before the machine is used for the first time.
Please email metech@rowan.edu to schedule a time to be trained.
The bed slats in the machine can developed pointed edges during operation, use caution when inserting and removing material.
The Waterjet is only for use in Rowan College of Engineering activities.
Equipment Details and Process Capability Information
Equipment Details and Process Capability Information
The Physical Prototyping Lab has a Omax Protomax abrasive waterjet cutter for use in College of Engineering projects. This rapid prototyping tool works by using a high pressure (~30,000 [psi]) jet of water combined with a crushed stone abrasive called garnet to precisely cut materials including composites, metals, plastics, and stone. The position of the jet is controlled by a robotic gantry which can be programmed from CAD files.
image (c) thefabricator.com
Process Capability Information
Process Capability Information
Be aware there is also a slight draft angle to any given cut, due to the tapered shape of the water. The ProtoMax is calibrated for the maximum material condition, meaning if the width of a square part is measured, we measure at the top surface, the smallest width, with some excess material left due to the draft angle. Closely fitting features or through holes must be oversize by the below tolerance, or a secondary operation performed.
Most features cut on the ProtoMax Waterjet to be within less than +/-0.01" when following the standard operating procedures described on this site.
The maximum part size that the Protomax can easily cut is 11.25" x 11.25" square. There is limited flexibility to this, as the material must be clamped to the cutting slats, and precise location of stock for interior only cutting is not an ideal process for the water jet.
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