| The Shop > Metal Stuff |
| Telling metals apart for casting. |
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| vtsteam:
What a cool thing to have! |
| awemawson:
They are nice boxes of tricks when working. I seem to remember that the firmware was different between them. They both print out % of metals but one of them had a look up table and translated it into the most likely commercial alloy such as LM5 or LM25 or whatever. Too old for your number series alloys ! Modern one are much more compact and fire an X-ray into the sample and do a similar spectral analysis I also have (again two !!!) more manual ones - again a spark between the sample and a pointed carbon, but this time you look at the spectrum produced yourself and look for the characteristic lines for the metals that you are interested in. I got quite technical when I had my foundry set up :lol: If I get time I'll dig them out and start a thread on them. |
| S. Heslop:
--- Quote from: awemawson on November 11, 2013, 11:51:23 AM ---They are nice boxes of tricks when working. I seem to remember that the firmware was different between them. They both print out % of metals but one of them had a look up table and translated it into the most likely commercial alloy such as LM5 or LM25 or whatever. Too old for your number series alloys ! Modern one are much more compact and fire an X-ray into the sample and do a similar spectral analysis I also have (again two !!!) more manual ones - again a spark between the sample and a pointed carbon, but this time you look at the spectrum produced yourself and look for the characteristic lines for the metals that you are interested in. I got quite technical when I had my foundry set up :lol: If I get time I'll dig them out and start a thread on them. --- End quote --- I'd love to see a thread on them. They sound pretty interesting. Thanks vsteam and oldgoaly. It does seem like the answer is just more experience. My first casting attempt was a disaster though so I probably won't be trying again for a while. Not until I get at least a moulding bench. |
| vtsteam:
Andrew, I once made a spectrometer with a couple razor blades a length of 2" plastic pipe and a piece of DVD. I've also salvaged carbon rods from dry cell batteries. you don't suppose..........? :zap: |
| awemawson:
Ok Ok I give in :bang: I'll dig them out and take some photos and start a new thread - :hammer: |
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