Custom Made Stainless Steel Marks for Clay. Looking for custom stamps to add a personal touch to your pottery or clay creations? Our custom pottery stamps are made from durable stainless steel, making them perfect for lasting use. With engraved metal dies, you can create unique and personalized patterns on clay surfaces.  Material: stainless steel. Laser engraving depth: 2-4 mm. Production time: 3-5 days. Receive a confirmation email within 24-48 hours for your design choice. Contact us at [email protected]