O'Fallon Casting's facility is located in O'Fallon, Missouri near St Louis.
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On October 7th, 2016 O'Fallon Casting participated in the St. Charles County Manufacturing Day, a program designed to expand knowledge about and improve general public perception of manufacturing careers and manufacturing’s value to the North American economy.

O'Fallon Casting broke ground on it's 25,000 sq. ft. expansion on October 4th, 2016.

O'Fallon Casting was represented at the Design 2 Part Show in St. Charles, MO on September 14th-15th

Technical Articles

Blind holes and pockets are common features of investment casting designs. They serve to lighten the part, provide designed clearances and are examples of the type of detail that can often be provided by the investment casting process at negligible cost to a customer.

A common question asked by Design Engineers in concurrent engineering is whether a particular hole in a part is castable?  To answer that question requires an analysis of the four dimensional components that constitute the description of the hole: diameter, length, diametrical tolerance and locational tolerance.

CAD systems have made the designing of parts both better and quicker and have a positive impact downstream from product design.  Also known as Digital Product Definition (DPD) the MBD revolution in design has had both good and bad repercussions for the foundry industry.


As a premier manufacturer of investment castings, O’Fallon Casting holds itself to the very highest of standards.

Our Services:

O'Fallon Casting's Laser Marking provides its customers with a new option for a consistently legible,...

Digital Radiography captures an X-ray image digitally, removing film from the equation and simplifying the...

To reduce the time and cost of bringing new parts to market, customers increasingly are...