Essential Guide to Polishing Medical Mould Injection Molded Parts

In the finishing process of medical mould injection molded parts, polishing plays a crucial role, impacting both aesthetics and functionality. Below are detailed considerations for sandpaper polishing and diamond polishing, aiding in the creation of high-quality medical moulds.

1. The Art of Sandpaper Polishing

1. Tool Selection and Fit

• Opt for soft wooden or bamboo sticks as polishing aids. Soft wood is ideal for rounding and curving surfaces, while harder woods like cherry are better for flattening. Ensure the stick's end is finely trimmed to fit the workpiece surface, preventing scratches from sharp angles.

2. Sandpaper Change and Polishing Direction

• When switching to different grades of sandpaper, adjust the polishing direction by 45° to 90° to clearly distinguish the stripes left by the previous grade. Before changing sandpaper or diamond polishing paste, thoroughly clean the workpiece surface with cotton soaked in alcohol or other cleaner to prepare for the next step.

3. Safe Polishing Strategy

• To prevent scratching and burning, operate gently using a two-step polishing method: polish twice along two different directions, each time rotating by 45° to 90°, ensuring uniform and safe polishing.

2. The Essence of Diamond Polishing

1. Precise Pressure Control

• Diamond polishing should be done under light pressure. Create a thin, narrow handle on the wooden or bamboo stick, or cut part of it to increase flexibility, allowing precise control of polishing pressure and protecting the mould surface.

2. Efficient Short-time Polishing

• Keep polishing time short to minimize pitting risks. Avoid methods and tools that generate heat, maintaining a gentle and efficient polishing process.

3. Cleaning and Protection

• After polishing, thoroughly clean the surface of the medical mould injection molded part, removing all lubricating oils and polishing agents. Then, evenly apply a corrosion-resistant coating for lasting protection.

In summary, polishing medical mould injection molded parts is both a technical skill and an art. Through meticulous operation and scientific polishing methods, not only can the overall quality of the product be enhanced, but its reliable application in the medical field can also be ensured. This guide aims to provide valuable support for your medical mould polishing journey with Yize Mould