Model cement, also known as plastic cement or polystyrene cement, is an essential tool for anyone who enjoys building scale models. Whether you are working on a plastic model kit of a car, airplane, ship, or any other type of miniature replica, model cement is a crucial element in ensuring a strong and durable bond between the various plastic parts. In this article, we will explore everything you need to know about model cement, including its types, uses, application techniques, and safety precautions.
Types of model cement
There are several types of model cement available on the market, each with its own set of characteristics and intended uses. The most common type of model cement is solvent-based cement, which is designed for bonding plastic parts made from polystyrene. This type of cement works by melting the plastic surfaces of the parts being bonded together, creating a strong and permanent bond once the solvent evaporates. Solvent-based cement is ideal for joining plastic parts that have a tight fit or require precise alignment.
Another type of model cement is epoxy cement, which is a two-part adhesive consisting of a resin and a hardener. Epoxy cement is ideal for bonding dissimilar materials such as plastic to metal or plastic to wood. It is also highly resistant to heat, water, and chemicals, making it suitable for outdoor or functional models that may be subject to harsh conditions.
Uses of model cement
Model cement is primarily used for assembling plastic model kits, which typically come in the form of unassembled parts that need to be cut, sanded, and glued together. Model cement is applied to the mating surfaces of the parts using a fine brush or applicator, and the parts are then pressed together firmly until the cement sets. Model cement can also be used for repairing broken or damaged plastic parts, filling gaps and seams between parts, and adding details to a model such as windows, hatches, or antennas.
In addition to bonding plastic parts, model cement can be used for other modeling applications such as scratch-building custom parts, modifying existing parts, or creating dioramas and scenic bases. Model cement is also commonly used in professional model making, prototyping, and architectural modeling industries for creating detailed and intricate models with precision and accuracy.
Application Techniques
When using model cement, it is important to follow the manufacturer’s instructions carefully to ensure a proper and secure bond between the plastic parts. Before applying the cement, make sure to clean the mating surfaces of the parts with a mild detergent to remove any dust, grease, or mold release agents that may interfere with the bonding process. It is also recommended to test fit the parts together before applying the cement to ensure a perfect fit and alignment.
To apply the cement, use a fine brush or applicator to apply a thin and even layer of cement to one of the mating surfaces. Press the parts together firmly and hold them in place for a few seconds until the cement sets. Avoid using too much cement, as excess glue may seep out and mar the surface of the model. If any excess glue does appear, immediately wipe it away with a cotton swab dipped in solvent or water before it dries.
Safety Precautions
While model cement is a valuable tool for model builders, it is important to take safety precautions when using this product due to its toxic and flammable nature. Model cement contains volatile organic compounds (VOCs) that can be harmful if inhaled or absorbed through the skin, so it is essential to work in a well-ventilated area and wear a mask or respirator to protect against fumes.
Additionally, model cement is highly flammable and should be stored in a cool, dry place away from heat, sparks, or open flames. Keep the cement container tightly closed when not in use and avoid smoking or using electronic devices near the work area to prevent accidental fires. If skin or eye contact occurs, wash the affected area with soap and water immediately and seek medical attention if irritation persists.
In conclusion, model cement is a versatile and indispensable tool for anyone who enjoys building scale models. By choosing the right type of cement, following proper application techniques, and taking necessary safety precautions, you can create high-quality models that are built to last. Whether you are a beginner or a seasoned model builder, model cement is sure to enhance your modeling experience and bring your creations to life.