{"product_id":"metric-shrink-ruler-double-sided-sold-individually","title":"Metric Shrink Ruler (Double-Sided, Sold Individually)","description":"\u003ch3\u003e\u003cspan style=\"font-weight: 400;\"\u003e\u003cstrong\u003eThis item ships directly from DiamondCore Tools and may ship separately from the rest of your order. Separate shipping charges may occur.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe handy Shrink Ruler from DiamondCore® Tools is a one-of-a-kind measuring tool for potters to measure clay shrinkage. This flexible, two-sided plastic ruler has four clay shrinkage percentages to help with projects when an exact match is crucial, such as lids for teapots, cookie jars, etc.\u003c\/p\u003e\n\u003cp\u003eThe photos show both sides of the same ruler. One side shows 6% and 10%, the other side shows 12% and 14%.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHOW TO USE YOUR SHRINK RULER\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUsing your Shrink Ruler is easy! Here’s a step-by-step guide example:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eMeasure the dimension of the finished piece you want using a standard inch ruler.\u003c\/li\u003e\n\u003cli\u003eFind that measurement on the Shrink Ruler on the scale corresponding to the shrinkage of your clay.\u003c\/li\u003e\n\u003cli\u003eMark or form the wet clay piece to that dimension.\u003c\/li\u003e\n\u003cli\u003eWhen the piece is done firing, it will have shrunk to the correct size.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eHOW TO MEASURE THE SHRINKAGE RATE OF YOUR CLAY\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTo use the Shrink Ruler, knowing the shrinkage rate of your clay is important. Generally, the clay supplier can provide this, or you can calculate it using the formula below.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eMake a rectangular clay slab that’s 10 cm X 30 cm and as thick as you plan to make your piece.\u003c\/li\u003e\n\u003cli\u003eWith a regular ruler, measure and carve a 25 cm line in the wet clay.\u003c\/li\u003e\n\u003cli\u003eLet the clay dry, then bisque fire the clay slab.\u003c\/li\u003e\n\u003cli\u003eThen fire the slab to final firing conditions.\u003c\/li\u003e\n\u003cli\u003eMeasure the length of the same line again with the regular ruler.\u003c\/li\u003e\n\u003cli\u003eUse the below formula to solve for S. \u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eS=(1-F\/M)x100\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eM=length of line in original moist clay slab with a regular ruler (25 cm)\u003c\/p\u003e\n\u003cp\u003eF= length of line in finished clay slab (with a regular ruler)\u003c\/p\u003e\n\u003cp\u003eS=percentage of shrinkage\u003c\/p\u003e","brand":"DiamondCore Tools","offers":[{"title":"Default Title","offer_id":40845329694802,"sku":"sku-39569258283175","price":22.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0081\/1905\/8514\/files\/SRMETRIC.jpg?v=1712395446","url":"https:\/\/cliyrevolution.com\/ja\/products\/metric-shrink-ruler-double-sided-sold-individually","provider":"Clay Revolution","version":"1.0","type":"link"}