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Message:: [QUOTE="19Lyds, post: 2416240, member: 15929"]A grease is made up of the three following components: <ul> <li>thickening agent 5% to 20%</li> <li>base oils 80% to 95%</li> <li>additives 0% to 10% The thickening agent - be it a soap or something else - has a tremendous bearing on the grease's performance.</li> </ul>In short, "grease" is anything comprised of an oily substance which may or may not be intended as a lubricant or cooking media. For example, I can lubricate the certain joints in my cars undercarriage with a lubricating grease OR I can add grease to my frying pan to sear my pot roast OR I can add fats to my lye and create a soap which could have a greasy feel to it OR I can wipe the debris off the underside surface of my cars engine which is a combination of oil seepage, dust, road dirt, road oils, and maybe an animal carcass yet still call it "grease". Especially if it's an older cars with many miles on it. Machining, of any type, REQUIRES some type of oil. Be it lubricating oil, cooling oil, cutting oil, cleaning oil. It's required. It's presence in the machining area can and often does compromise the machining processes. It is there, it exists and as such, can accumulate on coining dies. Whether it originate from a leaky seal, a machining process, or even a cleaning process, it is there.[/QUOTE]