Peter, The pieces of metal handed out are gauge plate (aka ground flat stock). This is an oil hardening tool steel. Let me know which method you use and I'll try something else. It'll be interesting to compare the results. Cheers, John B (also of Ickenham and District SME) >From: "Peter Cathcart" <peter.cathcart@xxxxxxxxxxxxx> >Reply-To: modeleng@xxxxxxxxxxxxx >To: <modeleng@xxxxxxxxxxxxx> >Subject: [modeleng] Indentation hardness testing >Date: Wed, 13 Dec 2006 11:52:04 -0000 > >We have a meeting at IDSME on Friday evening and the topic is as above. >Peter Pardington who is giving the talk, and bringing along the equipment, >has given a number of us a small block of metal and asked us to go away and >harden it for testing. Anyone any thoughts on the best way to make it as >hard as possible so I beat everyone else? > >Peter Cathcart > > >MODEL ENGINEERING DISCUSSION LIST. > >To UNSUBSCRIBE from this list, send a blank email to, >modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject >line. _________________________________________________________________ Be the first to hear what's new at MSN - sign up to our free newsletters! http://www.msn.co.uk/newsletters MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.