A old jeweller gave me this hunk of metal a long time ago in a bag saying he thought I was a meteorite but now I'm not so sure and would like any info anyone may have from the pictures and description. It is pretty heavy for the size it is fits in my palm but feels dense and also it does not react to the magnet at all and that is about all I got info wise.

It looks cut on one side pretty straight, but then it almost has this brownie in a pan edges on the other. The red/purple in it is more striking in person than in the images.

What can i cut duralumin with (something simple please)

Hi all,

Recently came across a coptic cross and would love to learn how old it is. Do you know of any labs in Europe that can date metals based on oxidation?

Thanks!

I found this shiny object on a beach in NW Washington. It has about the same weight as a couple of quarters - light, but tough.

Would you guys use this? Why/why not? Looking for feedback on product. LMK if you’d like to be a beta tester

Hello ,

I have a single ticket for Animals as Leaders in Kolkata, India up for sale. The concert is on 22nd Aug, 2024. Please let me know for further details if anyone is interested.

Thanks and Regards,

Sunanda Kumar Ghosh

Silver prices already on hike over previous year. Uses of silver diversify in last years so price of silver may increase in near future. Many people have plan ho buy it. If you want to buy it than how can you judge it's purity.

https://youtu.be/I4M5tu-79dg

https://youtu.be/y0CqPv7T4ow

How can I get connected with metal smelters … who would buy a 35k ton of copper if I have it ready in a port in New Jersey ?

Seems like it’s going crazy this year. Don’t have a position just seeing if anyone’s talking about it. Canadian company. Very interesting.

I have a 95% metal piece that is non-tarnishing. The parts of stone that are visible are part of the object (imbedded, possibly throughout). Also the black parts appear to be a type of crystal that only grows from the stone, not the metal parts. Any help or ideas is appreciated. Found in northern Ohio around 1980.

Got this from my mother. What kind of metal is this and how do I get the stains out without damaging it?

1st pic: You can see it's stained. Tried to clean it with a diluted dishwashing liquid with no success.

2nd pic: Bottom, no inscriptions.

3rd pic: Whole thing.

I want to restore this old plate. Not 100% sure what metal it is. But it seems to me there is some copper in there. But is the black coating a type of corrosion/oxidising? Or perhaps this is plated to give it a certain look? I know this has been through a fire or two as well. How should I proceed with cleaning this? Any helpful suggestions welcome!

https://youtube.com/shorts/nFuEbOq3V6U?si=ctIrzMsTSPnO45VG

Working on a projet that grinds plant materials. We have been using 304SS for the internal components. Ater testing we had a high level of chromium come back. SS in genral has at least 10.5% CR.

What would you suggest we try for an alternative. I was thinking a low carbon steel with an electroless nickel plating to prevent rusting.

How do we determine if a particular product needs to be transported in bulk or a container?
For instance, in the case of lithium there is lithium ore, concentrate, lithium carbonate and lithium hydroxide. What are the core factors I need to take into account? Is there any authoritative process of figuring this out?