This week's assignment is to design and produce something using a digital fabrication process, incorporating computer-aided design and manufacturing, not covered in another assignment.

I've decided to create air tight part using a Wire EDM machine.

Mitsubishi wire EDM

Wire EDM Machine:

A wire EDM machine utilizes electrical discharge machining principles to precisely cut through materials using a thin, electrically conductive wire. The process involves generating a controlled electrical spark discharge between the wire electrode and the workpiece, which erodes the material to create the desired shape. The wire is typically made of brass or similar conductive material and is guided along a programmed path to accurately cut the workpiece.

Specifications:

1. Cutting Capacity: Wire EDM machines can cut through materials with thicknesses ranging from a fraction of a millimeter to several inches.
2. Accuracy: These machines offer high precision, with tolerances as tight as a few micrometers (µm).
3. Speed: While not as fast as some traditional machining processes like milling, wire EDM can achieve intricate cuts efficiently.
4. Surface Finish: Wire EDM produces fine surface finishes, often eliminating the need for additional finishing processes.
5. Wire Types: Different types and diameters of wire can be used depending on the material and desired cut quality.
6. Control Systems: Advanced control systems enable complex geometries to be machined with ease.

Advantages:

1. Precision: Wire EDM machines can produce highly accurate and intricate shapes with tight tolerances.
2. No Contact: Since the wire doesn't physically touch the workpiece, there is minimal mechanical stress, reducing the risk of deformation.