1. Glass cracks easily, so the laser power should not be too powerful. Choose thick glass materials for better flexibility.
2. Lasers produce better engraving results on lead glass. However, lead glass is not suitable for food containers. Another alternative is to use crystal glass (the term often misused with lead glass, but most crystal glassware you find on Amazon should not have lead).
3. Covering the desired engrave area with a wet paper towel effectively prevents the glass from cracking during the manufacturing process, increasing the quality of the result.