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[kingcolex]

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[juju]

I am planning on engraving my seed words on 12 unique plates and have them somewhat order encrypted, what material would be the best to do this on? Has anyone else engraved using an engraving pen? Brass or steel is more preferable? Any negatives come to mind from engraving seed words?

These aren't just questions but I am also posting this thread because I think it is a great idea for everyone to do, an engraving of seedwords sure seems to beat a paper copy somewhere.

A bit different than Engraving, here is my stamping knowledge:

I did some brief research one day a few years ago, I quickly settled on Copper due to its melting point being above the average house fire temperature which is around 1200F.

'For this rating a specially designed room is heated to 1200 °F, which is the highest temperature in the average house fire.' - Google

'1,984°F (1,085°C)
Copper, Melting point' - Google

ETSY, has a few vendors similar to the one below that sell all the materials you would need for metal stamping.

https://www.etsy.com/shop/metalsupplychick

I think it cost the same amount of money for a stamping kit, plus metal and some other things to polish the copper etc for same price as a Netbook. ~120 US Dollars

Edit: Spelling

[DannyHamilton]

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Brass or steel is more preferable? Any negatives come to mind from engraving seed words?
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Doesn't steel have a terrible tendency to oxidize (rust) and disintegrate in a relatively short time period?

Or do you mean some sort of steel chromium alloy?

[Cryddit]

http://www.norsam.com/rosetta.html

Engrave on nickel plate too small for eyes to see. 

Read with a microscope. 

Hide anywhere. 

[Nagle]

Just get a power engraving tool with a diamond tip [1] (about $20) and some stainless steel sheet.
Stainless steel sheet is available from Online Metals for about $10/square foot, or at any restaurant supply outlet.

[1] http://www.amazon.com/General-Tools-Instruments-505-Precision/dp/B004YK66NM

[TheButterZone]

http://www.norsam.com/rosetta.html

Engrave on nickel plate too small for eyes to see.  

Read with a microscope.  

Hide anywhere.  

That seems a bit too excessive, I am not holding 100's of coins. I just need tags that ill engrave and a little letter on the top left i'll put a letter and a word it'll spell and that's how I will know what order they go in.

You should choose a word that anagrams out to the most possible other words, otherwise it won't take long to solve. How many 12 letter words are there?