Which of the following materials is NOT commonly used for making a casket?

The material that is not commonly used for making a casket is glass. While traditional caskets are typically crafted from wood, metal, or composite materials like fiberglass, glass is not a practical choice due to its fragility and inability to provide the necessary structural integrity that a casket requires. Caskets are designed to withstand the weight of burial, safeguard the deceased, and provide a respectful environment for the bereaved.

In contrast, wood and metal caskets are widely recognized for their durability and aesthetic appeal. Wood offers a range of finishes and styles while typically being chosen for its warmth and natural beauty. Metal caskets, often made from steel or bronze, provide strength and are resistant to decay, making them another common option. Fiberglass, while less traditional, is sometimes used due to its lightweight nature and versatility in design.

In summary, glass does not fulfill the requirements for casket construction, making it an unsuitable choice compared to the other materials mentioned.