Rao’s Machine Shop was established in the 1960’s.

We will produce your molds and custom machine parts. We are experienced and have many capabilities with the capacity to get your job done on time.

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From this page you can link to our specific pages on these topics:

Rao Design Engineering in Schiller Park, IL serves the Chicago area, customers nationally across the US and many clients 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.

Our machine shop has fabricated and repaired a number of custom molds, machined and 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 ours whether for plastics 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 strong with precision capabilities using many types of machinery and tools including 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 have a number of unique appearances or designs.

Blow Molds – Click Here to See Stock Molds for Sale

  • • Product Design
  • • Head Tooling-Bushing and Mandrel
  • • Blow Pins – Complete with Outer stripper Barrels, Cutters, Blow Pin Tips, needle blow, etc.
  • • Striker Plates, 4 Sided
  • • Cutters, Cutting Rings
  • • Detabbers and Deflashing Systems
  • • Parison Cut-off Knives
  • • Blow Mold Repair

We can complete the repairs on any Blow Molds usually in ONE DAY!  We will refurbish any Blow Mold for 20% of the original cost and make it like new

Full Machine Shop – see our equipment.


  • • Blow Molds
  • • PET Stretch Blow Molds
  • • Injection Blow Molds
  • • Injection Molds
  • • Extruder Screws, Rebuilt and New
  • • Many Machine Shop Fabrication
  • • Filling Lines
  • • Rebuilding Packaging Machines
  • • Custom Designed Machinery
  • • Consulting – Plastics and Packaging

PET – Molds and Tooling

  • • PET Blow Molding – Turnkey Operations – We are a World Class Mold and Machine Shop that has been    serving the Plastics and Packaging Industry for over Three Decades!  We are one of the first Mold shops to  offer the PET Technology over 20 years ago and have been working with Domestic and International Blow  Molders and Bottlers ever since.


  • • 3-4 Weeks: We can make a set of 4 or 6 cavity Molds with Petaloid base for 0.5, 1.0, 1.5 or 2 Liter  Beverage Bottles
  • • 4-5 Weeks: We can make a set of 8 or 10 Blow Molds for Sidel / Krup / Sipa / Cincinnati / Nissei / Aoki

Product Development / Sampling

Blow Molded Medical Devices

Engineering • Experience • CNC • Custom Fabrication