Can Tru-Stone calibrate and resurface my steel or cast iron surface plates?
No. Our equipment and calibration methods are designed for granite and do not work well on metal surfaces. Also, our lapping equipment will not work with metals, which generally requires hand-scraping to achieve the desired tolerances. Since hand-scraping is rapidly becoming a ‘lost art’, it is often more economical to replace a worn steel or cast iron plate with a new granite plate than it is to have the old plate re-scraped. There are many advantages of granite to the cast iron, as outlined earlier in this FAQ section.
