Die Sinking

Die Sinking EDM Solutions from Erodex

Erodex is a leading UK supplier of die sinking EDM products and solutions, supporting manufacturers in the tool and die, aerospace, automotive, and medical sectors. Whether you’re machining complex cavities, sharp corners, or high-tolerance moulds, our die sinking (or sinker EDM) solutions offer the precision, efficiency, and reliability you need.

With over five decades of experience in Electrical Discharge Machining (EDM), Erodex provides electrodes, consumables, and technical support to keep your sinker EDM operations performing at their best.

What is Die Sinking?

Die sinking, also known as sinker EDM or cavity-type EDM, is a process that uses a shaped electrode and controlled electric discharges to remove material from a workpiece. The electrode—typically made of graphite or copper—does not contact the workpiece directly but instead sparks across a gap, gradually eroding material to form intricate shapes or internal cavities.

This method is perfect for machining hard materials, producing complex geometries, and working within tight tolerances—especially in mould-making, stamping dies, and aerospace tooling.

Key Benefits of Die Sinking EDM

✔ No mechanical force – Ideal for fragile or hard-to-machine parts

✔ Precision cavity creation – Sharp internal corners and fine details

✔ Excellent surface finishes – Reduces the need for secondary processes

✔ Works on hardened materials – Including tool steel, titanium, and carbide

✔ Reproducible results – Great for batch work and mould replication

Die Sinking EDM Products & Services from Erodex

At Erodex, we supply everything needed to run efficient and accurate die sinking operations. Our range includes:

Graphite Electrodes for Die Sinking

• Available in various grades and densities
• Machined to custom shapes or supplied as blanks
• Ideal for roughing and finishing applications
• Excellent wear resistance and thermal stability

Copper Electrodes

• Preferred for high-accuracy finishing or where high conductivity is required
• Supplied in rods, plates, and custom-machined forms

EDM Consumables

• Dielectric fluids, filters, and deionising resin
• Essential for clean, consistent spark erosion
• Stocked and ready for dispatch across the UK

Custom EDM Fixtures

• Carbon fibre composite (CFC) fixtures
• Withstand high temperatures and stress during sinking operations
• Lightweight and precision-engineered to reduce thermal mass

Common Applications of Die Sinking EDM

Tool & Die Industry

• Machining injection mould cavities, stamping dies, and press tools
• Precision pockets, slots, and sharp internal features

Aerospace Manufacturing

• Creating intricate engine components and cooling channels
• Machining exotic alloys without thermal distortion

Automotive Industry

• Sinker EDM used for complex transmission and injection mould components
• Ideal for cutting hardened steels and composite materials

Medical Devices

• Precision surgical tools and implants
• Smooth finishes with tight tolerances on small, intricate parts

Why Erodex for Die Sinking EDM?

Erodex is a trusted partner to some of the world’s leading engineering firms, offering unmatched expertise in EDM materials and spark erosion processes. Our customers benefit from:

✔ Expert advice from EDM specialists
✔ UK’s largest stock of EDM materials
✔ Fast turnaround on custom electrode orders
✔ Precision CNC-machined electrodes and fixtures
✔ Decades of experience in aerospace and toolmaking sector

Beyond providing top-tier products, Erodex offers comprehensive services encompassing consultation, design, and machining. Their ability to understand the unique needs of their customers enables them to deliver tailored solutions that meet and exceed expectations. This commitment to innovation, quality, and customer satisfaction has established Erodex as a trusted partner in the aerospace industry and beyond. To keep up to date follow us on our Erodex Facebook page.

Prenez contact avec nous dès aujourd'hui : +44 (0)1384 892011

sales@erodex.com