Help with engraving

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Kulu

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Apr 15, 2021, 4:11:59 AM4/15/21
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Hi all

I have just started in crypto, and would like to engrave the seed on a couple of metal plates; I have not been trained on any of the relevant equipment, can I ask for some help?  I really only have time on weekends, and need some time to get the metal blanks. All help gratefully received.

Rowan Hoggarth

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Apr 15, 2021, 6:32:57 AM4/15/21
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What kind of engraving are you thinking of doing? 

The laser cutter in the space is not able to engrave metal, however it can be used to apply a thermal ink called 'cermark' to some metals.

There is a miniature rotary engraver, it requires no training, but it's a Chinese kit type thing and you'll need to look at it's manual  (on a CD) to use it. As far as I know if has not yet been used successfully.

I happen to own a fibre laser engraver which can engrave metals, which I would offer to burn you some cards with. However as the seeds are very sensitive information I don't know how that would be as to work! 

Best,

R

 


On Thu, 15 Apr 2021, 09:11 Kulu, <jkalm...@gmail.com> wrote:

Hi all

I have just started in crypto, and would like to engrave the seed on a couple of metal plates; I have not been trained on any of the relevant equipment, can I ask for some help?  I really only have time on weekends, and need some time to get the metal blanks. All help gratefully received.

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Daniel Edgecumbe

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Apr 15, 2021, 6:39:10 AM4/15/21
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From a cryptographical perspective it seems highly inadvisable to be typing key material into random devices! How likely is a fire compared to a public computer being compromised?

Daniel Edgecumbe | esotericnonsense
d...@esotericnonsense.com | https://esotericnonsense.com
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Rowan Hoggarth

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Apr 15, 2021, 6:50:58 AM4/15/21
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Another technique you could use is etching with copper: get a small sheet of copper and write by hand the seed in Sharpie marker pen. Dip this in ferric chloride (circuit board etch). This would produce an engraving like 'permentant' record, but would not use any computers!

R

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Adrian Godwin

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Apr 15, 2021, 7:04:18 AM4/15/21
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You could use a set of number / letter stamps to stamp them into a metal surface, dog-tag style

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Andre Amorim

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Apr 15, 2021, 8:09:10 AM4/15/21
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Hi, indeed it's a good idea to keep your BIP39/44 minemonic seeds backups in a post apocalyptic type of media.

Here's a list metal wallets and some ideas for engraving


I think the most important part of keeping your Bitcoin safe is actually generate your seeds with a truly random number generator.

The website by Ian Coleman about BIP39/44 Bitcoin specifications there are good web links with explanations about entropy principles and sources of random number.


All the best
André.





On Thu, Apr 15, 2021, 09:11 Kulu <jkalm...@gmail.com> wrote:

Hi all

I have just started in crypto, and would like to engrave the seed on a couple of metal plates; I have not been trained on any of the relevant equipment, can I ask for some help?  I really only have time on weekends, and need some time to get the metal blanks. All help gratefully received.

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luis fidel

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Apr 16, 2021, 4:51:43 AM4/16/21
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Hi 
side question to the engraving. I have a die cast blue sprayed stomp box I think made by Hammond or Camden boss. Can we use the laser to engrave / cut through the paint to the metal to make a front panel. Or does the issue of when the laser hits the metal and bounce back down the tube still happen and become a problem. 
Thanks


On 15 Apr 2021, at 12:04, Adrian Godwin <artg...@gmail.com> wrote:



michael....@gmail.com

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Apr 16, 2021, 8:57:19 AM4/16/21
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the issue with the painted stompbox is really the paint material: you should not attempt to engrave it until you know exactly what material it is and if it's compatible with our laser cutter otherwise you risk fire/fouling up the inside.
From personal experience I have never been able to get a straight answer from any "manufacturer" of painted/powder coated stomp box enclosures (my guess is they buy direct from China and don't ask too many questions) so while my guess would be polyurethane I never managed to get it confirmed.
Michael

Dax Liniere

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Apr 16, 2021, 8:39:49 PM4/16/21
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Hey Luis, unfortunately not.
Even if you were to ignore the chemical fumes from burning paint (which you should not) and the laser compatibility, the paint will very likely end up with ugly burn marks. Remember that paints are not designed to be burned, so the engraving on your nice finish will probably have brown marks around the edge of every line.
Your best bet is to find someone with a small CNC router and use a V- bit. You can set the line width by setting the depth.

Hope that helps!
By the way, what's the pedal you're building? I built quite a few during lockdown for my studio.

All the best,
Dax.

luis fidel

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Apr 17, 2021, 6:00:20 AM4/17/21
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Thanks for your responds was promted by the following video


I reached out asking what he used considering he was making stomp boxes for a living this is part of his response

“
That was on an Epilog Mini 18”, with a 25W CO2 laser. 25W when I bought it was a real industry minimum, and probably 35W would be the minimum or more now. But it shows that it doesn’t need much power to engrave anyway : )

The CO2 laser will never affect aluminium. Not on the highest power or lowest speed settings.

Those Epilog machines were the best at the time. Made in USA. You could re-run the same job 100x times and every pixel would be in the exact spot“
 
If possible and with a maintainer next to me would like to try it. But waiting on Hammond to respond as to what the specifics of their coating is.

Would also like to try at the same time using the laser to expose a pcb layout whether sprayed coating or the photo sensitive one, but need to look into it a bit more.
Thoughts? 
Thanks

On 17 Apr 2021, at 01:39, Dax Liniere <d...@puzzlefactory.uk> wrote:

Hey Luis, unfortunately not.

Jonathan Hodgson

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Apr 17, 2021, 6:07:03 AM4/17/21
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You should have asked him what the paint was, that's the issue, not the laser.

Google "laser marking spray"

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luis fidel

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Apr 17, 2021, 6:10:47 AM4/17/21
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He said

“Well I was engraving powder coating. Which is usually non-toxic polyester. “

But waiting to hear from Hammond the manufactures first

Sent from my iPhone

On 17 Apr 2021, at 11:07, Jonathan Hodgson <j.r.h...@gmail.com> wrote:



Jonathan Kalman

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Apr 19, 2021, 7:17:55 AM4/19/21
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Hi all

I have only just seen the replies - thanks for the ideas.  I do like the copper etching idea and will give it a go.

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