div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: About the columnist Daniel H Herring is president of The Herring Group Inc Elmhurst Ill a business specializing in practical solutions to problems facing the heat treating src=https:reader030vdocumentsmxreader030viewer20220408125e569036b450f817c627f964html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: About the columnist Daniel H Herring is president of The Herring Group Inc Elmhurst Ill a business specializing in practical solutions to problems facing the heat treating src=https:reader030vdocumentsmxreader030viewer20220408125e569036b450f817c627f964html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdiv