Rao Design Engineering in Schiller Park, IL is serving the Chicago area and customers globally. Full-service machine shop, milling, lathing, welding, refurbishing, CNC programming and tooling, polishing, many custom fabrications. We have been in business over 40 years.milling

Our machine shop has fabricated and repaired many custom molds, machined mechanical parts, and custom built machinery.  We have fast turn-around time, which is why many customers come to us during their times of need to get their production back up. 

Extruders screws and extruder work is another strength of ours- whether it’s used for plastic resins or food applications we can repair, build and engineer your equipment.  We have been in business at our location in Schiller Park, Illinois for nearly 30 years and have been in business for over forty. The staff experience is high with precision capabilities using many types of machinery and tools including CAD/CNC design and machining centers.

Over the years we have produced many parts from many different materials from SS (, Stainless Steel), to Aluminum to many different Alloys (, also including Beryllium copper,etc.). Please visit our molds page to see more our molding components and tooling capabilities. Parts can be engraved and made to have unique appearances or designs.

We have lots of equipment in our shop ready to be put to use for you.

Hass VF3 machine                                                  – Table is 18” x 48”                                              – Safely machines parts 18” height                – 40 tool changer for complicated parts

Hass VF2 machines                                       -Tables are 18” x 36”


For decades, Rao Design has worked around the clock to complete projects for customers.









Additional machine shop equipment we use (not pictured):

Hass Tool Room Mills- Table is 10”x40” Mills-

Over 7 Bridgeport Mills

Boring Mill

Lathes- Several will machine up to a maximum 48” diameter

Screw Lathe

Surface Grinders

Polishing/ Sand Blaster

Welding Equipment: Mig, Tig, Heliarc

Orbital welding for (Stainless Steel) tube, etc.


We have even more equipment: Gildemeister CNC Lathe, Sharnoa CNC Mill, Cincinnati Milacron CNC -Table is approximately 8’ x 4’, etc.