Being on nice terms is a policy. One way is by having a defensive oriented army and not getting involved in conflicts. Big chunks of the world already do this.
While I am treating it as a hobby I do have a garage full of CNCs, 3D printers, laser cutters, a pretty complete machine shop and the ability to do some foundry work. I am not expecting a complete collapse of society, mainly the collapse of the middle class as gradually the things they need get more expensive and they earn less. Being able to make stuff myself is already saving me money - you’d be surprised that for many of the bespoke things I need it is far cheaper to make it myself than send it out to a job shop. The idea is to be able to make replacement parts to contribute to the success of my local community so that it’s in their interest to shield me from whatever is going on beyond my gates.
While I am treating it as a hobby I do have a garage full of CNCs, 3D printers, laser cutters, a pretty complete machine shop and the ability to do some foundry work. I am not expecting a complete collapse of society, mainly the collapse of the middle class as gradually the things they need get more expensive and they earn less. Being able to make stuff myself is already saving me money - you’d be surprised that for many of the bespoke things I need it is far cheaper to make it myself than send it out to a job shop. The idea is to be able to make replacement parts to contribute to the success of my local community so that it’s in their interest to shield me from whatever is going on beyond my gates.