Sigma Power Ceramic stones are made of aluminum oxide

you can experience difficulty to take the compound from the jar if your air temperature is below 20°C (68°F)

and thickness compensator

📒 User's Guide

The middle part may have a small tilt to the frame

venev chameleon series dual side metallic diamond 6 x 1 Grit:800 + 1200 Sigma Power Ceramic stones areVenev Chameleon Series Dual Sided Metallic Bonded Diamonds are designed for use in sharpening systems such as Hapstone and TSProf. Diamond sharpening stones deliver excellent performance on knives made of any steel. The Chameleon Series is Venevs first dual sided stone featuring Metal Matrix Composite (MMC) binders. MMC is a new generation of metallic binders, often referred to as hybrid. The Chameleon Series utilizes a reinforced coppertin bronze