When preparing design files for engraving on slate, several types of file formats are commonly recommended to ensure high-quality results. The most preferred file types include:

• Vector Files: Formats like SVG (Scalable Vector Graphics) and AI (Adobe Illustrator) are ideal for engraving because they can be scaled without losing quality, allowing for intricate designs and precise details.
• PDF: High-resolution PDF files can also be used, especially if they contain vector graphics. They provide flexibility and are widely supported by engraving machines.
• DXF: The DXF (Drawing Exchange Format) file is commonly used in CAD applications and is compatible with many engraving systems, making it suitable for technical designs.
• Raster Images: While less ideal, high-resolution PNG or JPEG files can be used if necessary. It’s important to ensure they are at least 300 DPI (dots per inch) to maintain quality. However, they may require conversion to vectors for best results.

Always consult with your engraving service to confirm which file types they prefer.