[G-Spot]

Hi,
I worked for seven years fixing and servicing welding equipment.

Craig

Thanks for the info, unfortunately I am having to use the welder to first weld up the machines frame with structural steel, not Aluminium.

What would be a good wire to TIG weld structural steel I beams to the same grade plate ?

I see the replacement parts for the 3D printers are all upgrades for high speed feeding of flexible plastic. Check the pics out, the yellow one is $75 and the other one $150, you can use them with 1.7mm wire but I think I could modify them to run on a few mm larger. They are all metal and use standard stepper motors so give you complete control of the feeding. The one is a push type, the other pull.

What would be a good wire thickness and type to use in your opinion?

Those pro ones you listed are out of my budget, they would need to take the torch out of my hand and do the whole job for that price...lol