div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documentlach-diamond-international-magazine-the-issue-52018-journal-mold-die-jakobhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: Lach Diamond International magazine The Issue 52018 journal mold die Jakob Lach GmbH Co KG CernW1y The discovery of spark ero- sion for the efficient forming of polycrystalline loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader034fdocumentsinreader034viewer20220429145f4d6a1f1177844bdc782766html5thumbnails1jpg width=140 height=200 divdiv