3-2024 Take your GPG key with you.......

I asked LG a question about GPG. Is there a neat way to export and save my GPG/PGP secret key (private key) on a USB stick ? I have to do this, since I am often changing my machines (most of which are given on loan by my employers). The secret key goes away with the machine, and I am obliged to generate a new key pair each time. I did a Google search and did not succeed. I know I can save/export my public key, but GPG/PGP refuse to let me use a copy of my secret key.
And I got this answer::

https://linuxgazette.net/179/misc/lg/gpg_secret_key.html

To use the secret key:: https://unix.stackexchange.com/questions/184947/how-to-import-secret-gpg-key-copied-from-one-machine-to-another

Try this, and tell the world how it worked for you. partha