you can find small "SIP" welders , in gasless ( i have used them and are ok for small jobs ) but dont leave a good quality finish , i went and bought a gas welder for $900 and hired a bottle , never looked back , try ebay if you want a 2nd hand one , BUT you may be buying someone elses problems , why not look at hiring one for the weekend , do what needs to be done.. cheaper in the long run if you wont be using it often