Just got a new 80gallon compressor and ran 3/4" copper piping . I need a piece of flexible hose to go from the compressor outlet to the copper hardline . What do i use and where can i find it at ?

I used reguar high pressure water hose from Home Depot. Very similer to heater hose but it much stiffer. Unfortuneatly you have to buy liek a 20' roll of it. Its not expensive at all and its good to have for general uses too.

I want to run 10an braided eventually just for a nice line to talk about at meets...lol

Careful with the copper, it will corrode real bad inside due to air and constant moisture. In 5 years or so you might want to change it out. I run Schedule 40 PVC inside my walls.

I have a Air to water separater between the tank and wall, then the main outlet has a water separator as well. Very good investment for your air tools.

Does that high pressure hose have ends on it ? I was just lookin in home depot today . I thought copper was the standard and pvc shouldnt be used due to it becoming a projectile if tapped . I have about a 50' run with 3/4 copper and 4 slopes to drains then a water seperator/regulator at the end . I eventually want to use AN hose as well i just need to get it running to do a project and nobody around here carries AN stuff .

You dont tap it. you buy the correct ends and pvc glue them on. You can get ends with NPT threads molded into them and configure your lines liek that. YOu MUST use schedule 40 PVC.

Thos hose i uses didnt have ends on it, its just stronger hose. use a barbed fitting and 2 clamps.