Investment Casting

aluminium investment castings produced by Precision Investment Casting


Investment casting is one of the oldest metal forming processes in the world. For over 5,000 years the investment casting process has been used to create complex and detailed cast metal components for a variety of different applications.

Metal castings are formed through the “lost wax” process. A wax replica of the component is produced, “shelled” and burned out to produce a mould for the metal casting. The desired metal is then poured into the mould and it is then left to solidify to form a finished casting. If you would like to learn more about the investment casting process, take a look at the step by step guide that we have created which explains the process in more detail.

The accuracy and quality that investment casting offers make it the first choice process for many engineers who work in industries where precision is paramount.

Examples of Aluminium investment castings manufactured by PI Castings

The investment casting process has many advantages. It can grant engineers a degree of design freedom and flexibility that cannot be matched by other traditional manufacturing processes. It can produce features that cannot be formed by machining and other traditional methods. The process can significantly reduce, and in some cases even eliminate, the need for expensive machining and assembly processes.  The tight tolerances and fine surface finish that investment casting offers means that components can be produced that are fit for purpose in their ‘as cast’ state.

Investment casting is the ideal production method for manufacturing complex and detailed components that have to be lightweight and have good integrity.


At PI Castings we have been producing  Investment Castings since 1950; making us one of the longest established investment casting manufacturers in Europe.  Our purpose built facilities allow us to run two production lines side by side, this means that we are able to manufacture our high integrity investment castings in a wide range of ferrous and non-ferrous materials.

We believe that there is no substitute for experience. Our experience, coupled with our customer service, quality control, focus on OTIF delivery has seen us become one of the largest and most reputable manufacturers of investment castings in the UK.

We have an excellent reputation, resulting in us becoming the investment casting supplier of choice within a number of industries. Our team are well versed in manufacturing precision components for the aerospace, defence and oil & gas industries, to name but a few.

Examples of steel investment castings produced by PI Castings

We have gained a wealth of knowledge and experience over the 65 years that we have been manufacturing precision investment castings.  The experience within PI Castings is invaluable when it comes to giving technical advice and supporting projects. The experienced team at PI Castings is always on hand to offer advice and guidance; from the early design stages of a project right through to the finishing of production castings. Our engineers can provide you with expert guidance on design features, achievable tolerances, datum planes, tooling points and the available finishing options.

PI Castings are focused on continuously refining the manufacturing process to ensure that we can produce products that meet the most stringent quality standards in a cost-effective way. Our detailed approach has gained us many international manufacturing accreditations and approvals. Our first-rate service has contributed to us achieving preferred supplier status with many major corporations.

aerospace investment casting manufactured by precision investmnet castings


If you have a project that requires investment castings, or if you would just simply like to learn more about the investment casting process, contact us today and speak with our team to see how our experience can help you.

Get in touch

If you have any questions about our Investment Casting services, Machining services, Rapid Prototyping services or Low Cost Sourcing services, please make contact with one of our capable engineers and they will provide you with more information