Hi John, Using a CBN Blade sold by the company you referred to is a bad idea in my experience. In the past I used their blades and they were great early on. Don't know what happened but the quality of the blades went down and I coudn't even cut a half inch before the material on the blade wore off. I could feel on the blade where it was smooth and other areas maybe still a little cutting material left. I commented to the company owners before they sold the business and they were concerned as I showed them the blades and mentioned how long the blades lasted. However the problem was never solved and I stopped wasting my $$ on the blades. I don't recommend that someone who hasn't cut meteorites before cut off a sample. Picking the right spot so as not to detract from the mass is important. No doubt you will get a lot of people offering to cut for you, some good some not so good. Why not take it to the meteorite lab in Portland to have a sample cut. I would bet they would allow you to be there during the cutting. I'd make sure they know what they are doing as I have seen cutting jobs messed up by some of the best known institutions. One place lost over a kilo of material from their lack of knowledge of the material. Good luck! --AL Mitterling Mitterling Meteorites Quoting John Pierce via Meteorite-list <meteorite-list@meteoritecentral.com>:
Hello All, This is my first post here. I joined recently because I found a lovely nickel-iron meteorite, and that has spurred my further interest in this subject. My meteorite has been confirmed as the real thing by staff of the Meteorite Lab at Portland State University, who would like to perform classification. It is 11.2 kg, and according to PSU staff, it will be only the seventh classified meteorite ever found in the state of Oregon. I?ve enjoyed reading these archives, but I haven?t yet been able to find answer to my question. I?m posting here to ask if anyone has any experience cutting an iron meteorite with the CBN blade that is sold by Johnson Brothers Lapidary. They advertise it as just the thing for cutting irons. I?m interested to know anything about blade life, rim speed, feed rate, and using plain water as a coolant/lubricant. For cutting the analysis sample, I have machining experience and very suitable tools, except for the blade, which I would like to be a circular blade. I welcome replies here on the forum, or by private email. Kind regards, John
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