Expert Tips for Cutting and Shaping Expanded Metal Lath: Mastering 10 x 8mm Mild Steel

For both functionality and aesthetics, it is crucial to achieve precision and clean edges when working with 10 x 8mm mild steel expanded metal.

Here are detailed techniques to help you accomplish this:

1. Marking Your Cut:

• Preparation: Begin by thoroughly cleaning the surface of the metal to ensure clear visibility of markings.
• Using Chalk Line or Marker: A chalk line can provide an accurate guide for long, straight cuts. Use a fine-tipped marker for intricate designs or curves. To ensure accuracy in your final cut, be precise with your markings. 
• Double-Checking Measurements: Don’t forget that measuring twice and cutting once is always a better idea. As a result, you will waste less material and your cuts will be in accordance with the project requirements.

2. Using Metal Shears or Nibbler:

• Manual Metal Shears: When it comes to cutting thinner sheets of expanded metal, manual shears provide the best control and ease of use, making them ideal for smaller or more demanding jobs. This kind of tool is especially useful when you need to cut shapes or if you want to do projects that require a more hand-on approach.
• Electric Nibbler: An electric nibbler can be more suitable when dealing with denser parts of the mesh or for prolonged use. With it, precise cuts can be made without distorting the material and complex shapes can be cut out easily.
• Technique: Use either tool slowly and steadily, following the marked line closely. To prevent jagged edges, keep the cutting blades sharp and well-maintained.

3. Employing an Angle Grinder:

• Tool Selection: Choose an angle grinder with an appropriate metal cut-off wheel. Ensure the wheel is suited for the thickness and material type of your expanded metal.
• Safety Precautions: When using an angle grinder, always wear protective gear, including gloves and eye protection. Be aware of the sparks and debris that will be produced and keep a steady hand.
• Cutting Process: Start the cut by aligning the grinder with the marked line. Keep a steady pace and apply consistent pressure to ensure a straight and clean cut. Don’t force the grinder through the metal; let it do its job.

4. Bench Shears for Straight Cuts:

• Ideal for Long, Straight Cuts: Long, straight, and precise cuts can be made with bench shears. Particularly useful in projects requiring uniformity and straight edges.
• Operation: Secure the metal lath firmly against the edge guide of the bench shear. Apply steady pressure on the handle to create a clean cut. For longer sheets, it may be necessary to make multiple cuts.
• Advantages: During cutting, bench shears provide a stable platform, reducing the risk of metal buckling or bending. For professional-grade straight edges, this stability is essential.