Machining Services.

Groppi Labs at ASU 

World Leader in Metal Micromachining

Groppi labs has produced splitblock waveguide structures in brass, aluminum and tellurium copper for frequencies ranging from 100 GHz to 2.7 THz, for both our own research and outside customers.

Our Machining Technology

The lab is equipped with a Kern Evo micromilling system. This 3-axis CNC milling machine is capable of 0.5 micrometer accuracy and can routinely produce measured accuracies as close as 2 micrometers. Feature aspect ratios of up to 10:1 are achievable. See the table below for more specifications.

Expert Staff

The micromachining lab is staffed with a dedicated machinist, Matthew Underhill. He is supervised by Dr. Christopher Groppi, who has extensive experience designing and fabricating terahertz waveguide structures and other micromachined metal components using these techniques.
Specification
On the part accuracy
+/- 1.0 um
Measurement accuracy
+/- 1.0 um
Surface Finish (Ra)
<0.1 um
Minimum feature size (x-y)
10 um
Minimum feature depth
5 um
Maximum feature aspect ratio​
10:1
Split block alignment​
+/- 2.5 um
Minumum radius of curvature​
10 um
Machine work volume
300mm x 280mm x250mm
Micromachining lab summary
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Micromachining Center rates 

The micromachining center at Groppi Labs is available for the design and execution of all your micromachining needs. Please send us a message on the "contact" page if you would like more information or to request our services.
Job Type
Design Cost
Labor Costs
General Purpose Machine Use
Ultraprecision CNC Machining Center
Test Equipment
ASU Internal Request
$206/hr
$99/hr
$20/hr
​$40/hr
$20/hr
External Non-Commercial Collaboration
$296/hr
$​145/hr
$28/hr
$56/hr
$28/hr
External Commercial Collaboration
$350/hr
$160/hr
$50/hr
$80/hr
$50/hr