EDL have been manufacturing precision aluminium castings from our modern foundry which consists of investment casting & lost wax casting processes. This is accompanied by our precision sand casting & gravity die casting service, which is offered to companies in the UK and internationally.

With a steady investment in plant and process control systems, the business has grown steadily, providing a diverse range of market sectors with investment & lost wax precision castings. We are a key manufacturer of precision castings to the aerospace, marine, defence, commercial, automotive and architectural industry sectors. EDL do have the capability within the company for producing high quality castings & components, machined parts, complex components and assemblies for a wide range of other sectors, if required.

Precision Components

Investment casting, also known as lost wax casting, offers the potential for finely detailed precision castings with complex internal structures suitable for the most demanding of industries. The investment casting process is complex and involves a number of stages as detailed below:

  • Tooling Design
  • Production of Wax Pattern
  • Preparation of Casting Pattern Tree
  • 7 Layer Ceramic Shell Coating
  • Wax Removal by Melting
  • Metal Pouring
  • Knock Out
  • Sprue Removal
  • Flaw Detection
  • Heat Treatment
  • Machining
  • Finishing
  • Inspection

Quality Control

EDL maintain very high standards of quality control throughout all stages of casting manufacture. Combining our years of experience with the latest technical capability and an array of flaw detection techniques, metallurgical controls and CMM, we are able to offer investment castings for the most challenging performance criteria.

Waxes & Coatings

Quality of finished castings is dependent entirely on the quality of the waxes and coatings used. We use only the finest new filled, emulsified and straight pattern waxes together with high grade ceramic slurry. Moulds are thoroughly cleaned and internally treated with a release agent prior to coating to ease production and produce parts of high quality.

Material Grades for the Foundry

Aluminium Grades

LM4, LM6, DTD 716 (LM8), LM25M/TF, LM25 TE/TB7, DTD 5008, DTD 5018, BS2 L99, A 356, AE 109, BS L155, BS L169/A 357, C 355, ENAB 44200, ENAB 45200, ENAB 46200

Aluminium / Bronze and Other Material Grades

AB1, AB2, G1, HTB1 LOW LEAD, HTB1, LG3, LG4, PB1, PB2

Plant List

  • 3 Epic 5, 12 & 35 Tonne Side Injection Wax Presses

  • 2 Mod-tech E-93 Wax injection machines

  • 1 Bryant 5 Tonne Top Injection Press

  • 1 Sorrin 20 Tonne Top Injection Press

  • 3 Shell Aerators

  • 2 Ceramic Mixers Environmentally Controlled Drying Room

  • 1 1250mm Dia Boilerclave

  • 1 AEW Shell Firing Furnace


  • Aluminium Alloys: LM6, LM25, L99 and others

  • Shell core capability

  • Precise melt control - dual energy furnaces

  • In house Gravity Die tool manufacture

  • In house heat treatment to TE/TF

  • Spectrographic melt analysis

  • Penetrant NDT facility

  • X-ray facility

  • Test bar analysis

  • CMM mark out capability

  • Comprehensive machine shop support


  • Castings up to 200 kgs

  • Typical Gravity Die batch sizes 50 to 500

See full plant list

Quality Assurance

EDL hold the EN 9100 / AS 9100 accreditation and operate a dedicated quality control service for the manufacture of casting products and components. The inspection department which is staffed by five permanent highly skilled and experienced engineers, is fully equipped to handle all dimensional inspection processes, as well as facilities for non destructive testing as below.

Depending on your requirements, we can offer a wide range of inspection programmes to suit the product.

Full Details