BANK OF KNOWLEDGE on Instagram: "1. Sometimes the most stunning artistry comes from the simplest tools, and this glass design technique proves it. 2. A basic bar punch—normally used in metalworking or shaping—becomes a precise instrument for glass creativity. 3. Craftsmen heat the glass until it reaches a soft, workable glow, just moments away from molten form. 4. With perfect timing, the bar punch is pressed into the surface, creating clean, sharp patterns without cracking the glass. 5. Each pu