I'm from Cincinnati, and I'm reposting this here since Northern KY is just south of us... HELP! Bear with me, if you would... Last year at about this time I appealed for help for my son's 7th grade science fair project, the hypothesis being "The greater the caliber, the greater the penetration". Help was amply offered in the form of customized .357 ammo, pistols of various calibers, etc. That help and my help, together with my son and his partner's diligent efforts added up to the boys winning first place! Yipee!! Although this year they proposed a project with rifles! I talked them out of it because (among other reasons) they needed to broaden their horizons. Instead they chose to hypothesize about the strength of various metals. Their hypothesis is "Steel is the strongest metal". I only know of two strength measurements for such materials - tensile and compression. My thought was to have them secure various metals - copper, steel, aluminum, titanium (!), etc. and have them tested for tensile strength using an apppropriate machine. The reason I asked about metallurgists is that I thought one might have access to/information on metals and a machine which could do the testing. (My nephew may have access to a pulling machine through his college, but it is not a definite. Getting metal samples is less clear, as I don't have the specifications since we haven't nailed down the machines.) Any help in the direction of securing a testing machine and/or metal samples is GREATLY appreciated. Thanks much, BB62 Wanna kill these ads? We can help!