user2883: What setup are you using for your air gap machine? Did you buy specific hardware, or some old pc laying around? If reusing some of your old hardware did you wipe it before using it again?
Im looking for a cheap solution. I also read that it is possible to use a hardware wallet to create your cold keys. Any experiences with this? And how would you technically do this?

user2901: The way that I choose is to use a live USB with Tails OS and a persistent encrypted storage.
Once Tails OS is installed, you can decide to boot it without network connection or as they call it "Offline mode". Tails also supports OpenPGP, so if you want to be extra secure and encrypt your keys/recovery phrases with a YubiKey or something similar you can do it.
The only hardware that you need are 2 USBs with at least 8GB, one for main usage and one for backups.
If you need help on setting up this solution just let me know, I am here to help.
Edit:
If anyone is interested, I've created a guide on setting up this solution, you can find it here.
If you have any improvements just let me know, I will be happy to make it better over time :-)

2883: <p>What setup are you using for your air gap machine? Did you buy specific hardware, or some old pc laying around? If reusing some of your old hardware did you wipe it before using it again?</p>
<p>Im looking for a cheap solution. I also read that it is possible to use a hardware wallet to create your cold keys. Any experiences with this? And how would you technically do this?</p>
 2901: <p>The way that I choose is to use a live USB with <a href="https://tails.boum.org/" rel="nofollow noreferrer">Tails OS</a> and a persistent encrypted storage.
Once Tails OS is installed, you can decide to boot it without network connection or as they call it &quot;Offline mode&quot;. Tails also supports OpenPGP, so if you want to be extra secure and encrypt your keys/recovery phrases with a YubiKey or something similar you can do it.</p>
<p>The only hardware that you need are 2 USBs with at least 8GB, one for main usage and one for backups.</p>
<p>If you need help on setting up this solution just let me know, I am here to help.</p>
<p>Edit:
If anyone is interested, I've created a guide on setting up this solution, you can find it <a href="https://github.com/Techs2Help/TailsOS_cold_storage" rel="nofollow noreferrer">here</a>.
If you have any improvements just let me know, I will be happy to make it better over time :-)</p>
