Scale modelling is an intricate and rewarding hobby that involves constructing models at a certain scale, often of vehicles, buildings, and figures. One key aspect of creating a flawless scale model is effectively dealing with mold lines. These lines are the seams where two parts of the mold come together in the manufacturing process. Although they're a normal part of the model-making process, leaving them unaddressed can detract from the realism of your model. In this blog, we’ll explore the basics of how to polish these mold lines effectively.
Understanding Mold Lines
Before you begin, it's important to understand what mold lines are and why they appear on your model. They are not a defect but rather a part of the manufacturing process. However, for a more realistic look, removing these lines is essential.
Tools You Will Need
- Fine grit sandpaper or a sanding stick
- A hobby knife
- Needle files
- Polishing cloth
Step-by-Step Guide
1. Identifying the Mold Line
Carefully examine your model to locate all the mold lines. Good lighting is key here to ensure you don’t miss any. This can be done before or after removing the parts from the plate.
2. Gently Scraping Away the Line
Using your hobby knife, gently scrape along the mold line. Be careful not to apply too much pressure, as this can damage the model. You're aiming to reduce the line, not cut into the model. If the mold line is not obvious and quite shallow, skip this step.
3. Sanding Down the Area
After scraping, use fine-grit sandpaper or a sanding stick to sand down the area. This helps to smooth out any roughness and ensures that the line blends seamlessly with the rest of the model. Start from a coarse sandpaper (lower grit number) and move on to a higher number one when the majority of the mold line is removed.
4. Polishing for a Smooth Finish
Once you’ve sanded the area, use a polishing cloth to give it a smooth finish. This step is crucial for achieving a professional look. You could get away without if you plan to cover the surface with primer or paint.
5. Checking Your Work
After you’ve finished polishing, examine the model again under good lighting. Make sure that the mold line is completely removed and the surface is smooth. You can always come back and forth with it before the painting starts.
Tips for Success
- Always work in a well-lit area.
- Be gentle and patient. Rushing can result in damage to your model.
- Practice on a spare piece if you’re new to this process.
- Sandpaper can be filled with removed dusts quite easily. Regularly clean your tools for the best results.
Conclusion
Polishing mold lines may seem daunting at first, but with the right tools and techniques, it's a straightforward process that greatly enhances the appearance of your scale model. Remember, patience and practice are key.
Happy modelling!