Hi Jim,
many thanks for the help.
i made a small research in the google and i found out that for making tig weldings i need:
1)electronic equipment
2)gas tank
3)elektrodes
i dont know if i am right. there are many types of them that i am confused. i canot estimate the total value of the above.for example :
what size of tanks and what valves?
what size of electronics and electrodes type and value?
can you estimate a vaue for what i need to weld small parts with a few centimeters long??

the other alternative , silver soldering , is interesting also. if we forget the low temp solderings and talk abou silver soldering at about 600-650 celsius do you think that is enouth?
the only equipment will be a propane torch.
are you experienced with that types of soldering?

thanks again,
achilles