Clay Ruler Shrinkage lab

🧪 How to Measure Clay Shrinkage:

• 1. Prepare Sample: Roll out a clay slab approximately 5mm thick. Cut it to roughly 110mm x 50mm.
• 2. Mark: Carefully draw a line exactly 100mm long on the wet clay surface.
• 3. Dry & Measure: Allow the test tile to dry completely (Greenware). Measure the line again and enter this as “Greenware 🍃 mm”.
• 4. Bisque & Measure: Fire the tile to bisque temperature. Re-measure the line. Enter this as “Bisque 🔥 mm”.
• 5. Glaze & Measure: Glaze and fire the tile to final temperature. Re-measure. Enter as “Glaze 🎨 mm”.
• 6. Use the Tool: Select the stage transition (e.g., Dry ➜ Bisque) to generate a ruler specifically for that step of the process.

⚙️ Using the Features:

• Presets: Save your clay data to load it instantly next time.
• Modes: use Shrinkage for standard compensation. Use Plus % to just scale up by a percentage.
• Center-Zero: Select this Ruler Type for wheel throwing (0 is in the middle).
• Rotate: Use the rotate button to fit long rulers on a portrait page.