The bottom line is you need your AC system redone. You need to
A. Take it to someone who knows what they are doing
B Pay for it
It's not rocket science. People can go back and forth on the internet for weeks or months about this and that but it isn't going to make your car cold inside.
(deep, patient breath)
It's not rocket science, indeed.
Kind of a snarky reply, maybe? If that is not how you intended it apologies, but to me, it comes across that way. Life is too short to be anything besides nice..,..especially online where sometimes it is hard to know the intention of a comment.
That said --- "bottom line" here is I am mostly looking for help finding hoses.....and I am aware they can be made , but that specialty is going by the wayside at least around here.......used to be 4 shops that did it back in the 1990s and 2000s for me.....now there is ONE. My son is in a place with even fewer choices so far. HENCE -- looking to see if pre-made is even still a possibility.
The refrigerant comment was an aside, and mentioned because the local shops around him DONT know what they are doing apparently with old rides....so your premise of A&B don't hold until someone who DOES know what they are doing is found, that wont rape us.
The old AC system is just basically parts that bolt together....basic automotive stuff.....with the addition of needing to pull a vacuum and such.....my son is more than capable of doing the mechanical part....and he is looking to have the evacuation and refill done by a shop WHO KNOWS WHAT THEY ARE DOING.
So you advice is ....well, misplaced.
As for "going back and forth for weeks"......I don't mind. If anyone does, they should just scroll by.