The Manufacturing Process Making the ink 1 The ink mixture is concocted. Preferable ratios are 1-10 % water by weight (the water content must be sufficient for complete dissolution or dispersion of the dye), with the remainder of the weight being made up of a solvent such as alkyl or alkylene carbonate.
The Romance of Steel A History of the Steel Industry by Herbert Newton Casson THE BIRTH OF THE BESSEMER PROCESS. On that bleak November day when Andrew Carnegie was born in a Scottish cottage, the iron and steel makers of America had no more thought of millions than of castles in Spain.
The SpeedFlex instead uses a ratcheting system that locks the helmet into place with a four-point system. While it can be easily removed, the quick "tug-tug" system will get a custom and comfortable fit while making it nearly impossible to "forget" to snap the helmet.