How to Produce a Custom Gobo: A Step-by-Step Guide
Mar 06,2025 | JINGYU OPTOELEC
Creating a custom gobo (a stencil placed in front of a light source to project patterns or logos) is a fantastic way to personalize events, branding, or stage designs. Whether for weddings, corporate events, or theatrical productions, here’s how to produce a high-quality custom gobo:
Design Preparation
- Vector-Based Artwork: Start with a vector file (AI, EPS, or SVG) to ensure crisp edges and scalability. Avoid intricate details, as fine lines may break during production or fail to project clearly.
- Monochrome Simplicity: Gobo designs work best in black-and-white. Solid black areas block light, while white areas become transparent. Use bold shapes, text, or logos for optimal visibility.
Material Selection
- Metal Gobos: Made from stainless steel or aluminum, these are durable and ideal for short-term use or simple designs. They’re cost-effective but less suited for ultra-detailed patterns.
- Glass Gobos: Etched glass allows for intricate, full-color designs (using dichroic filters). These are pricier but offer superior detail and longevity, perfect for permanent installations.
Production Process
- Laser Cutting (Metal): A laser etches your design into the metal sheet, ensuring precision. Specify the gobo size (common: 55mm or 75mm) to match your lighting fixture.
- Chemical Etching (Glass): For glass gobos, a chemical process creates the design. This method supports gradients and fine details but requires professional equipment.
Testing and Usage
- Check Compatibility: Confirm the gobo size matches your projector (e.g., Martin, ETC, or Source Four).
- Focus Adjustments: Use a gobo holder to position the stencil correctly. Test the projection distance and focus to avoid blurry or distorted images.
Our Insight
Work with a reputable manufacturer and request a digital proof before production. Avoid overly complex designs—simplicity ensures clarity when projected!