Handmade! Laser Engraved 30oz Tumbler, Sunflowers, Yellow! Laser engraving is a non-contact process that uses a focused laser beam to vaporize a material's surface, creating a permanent mark. The durability of a laser engraving can exceed 30 years, and in many cases, it is permanent. On materials like stainless steel, aluminum, or titanium, engravings can last for the entire lifetime of the item without noticeable wear.