Welding guru needed for kit guns

[bplvr]

I need some info on welding a 4130 .100" wall tube to a 1020 .100" wall tube. I found that a ER 80 S wire is prefered, but I can't find any reference for an amp setting.
All advise greatly appreciated.
What would be the best unit to buy to do this on the cheap ?

Thanks in advance.

[Toe Jam]

[beerman]

Having 35 years in the business, I can tell you that Toe Jams advice is right on. Send it to a pro and have it tig welded for the best quality/looking results, mig for the most economical.

[bplvr]

I would like to be able to just have it welded by a pro ,but as a kit gun I have to weld it myself. I might be able to silver solder it all together and shoot it and then have it TIG'd.

[beerman]

Dont do that, the silver solder will make the joint impossible to conventionally weld unless its taken apart and the solder completly removed from the weld area.

[Toe Jam]

Take it down to a welding shop. I curse my customers out when they bring me something stupid like "JB Weld" or solder on it.

Just last week a guy brought a motor mount from his car caked with JB Weld. I charged him double than what it would have been if he just left it alone.