Ade, John,
I would partly agree with you. I do have some of the skills to make some of it. But I would not consider an undertaking like that.
I sometimes wonder, when I see such things, just how much went in the scrap bin ?? As Ade says.
And how many 'recovered errors' there are, no longer visible?
I cannot imagine there are none.
Nope, not for me ... happy to admire from afar, as it were.
Dave BC