Air Conditioning Leak

[jesse53]

Hey, i got a 1993 240sx with a leak in the high pressure side on the line going into the radiator. Unfortunately it is the r12 system so to fix it i would need to spend way more then i have.i had 2 cans of recharge and put the one in last summer and everything worked great for about 20 min and then it all leaked out. iknow where the leak is so is there anyway i can just fix the leak by myself some sort of weld or something. Im new to this topic so any info would be great