mig wire as a filler rod

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i was thinking instead of paying airgas for a pound of rg45 gas welding rods why not use sidecutters and cut mig wire off the spool and use it as filler rod i think it's a smart and cheap idea.
Reply:I do it with small stainless welds a lot.Tim Beeker.
Reply:I've used mig wire for filler.  I've doubled it and twisted it together if I needed thicker stuff.  It works fine for welding thin material.
Reply:Isn't RG45 wire for oxy/fuel welding? If you take mig wire and use it for tig welding, yes that works.Torchmate 2x2 CNC with Flashcut CNC controlsHypertherm Powermax45 Esab ET220i Razorweld 195 MigRazorweld 200ac/dc TigTormach 770, Tormach xstechRazorweld, Vipercut/Vipermig, SSC Foot Pedal Dealer
Reply:Do it all the time!Even made a video about ithttp://www.kevincaron.com/video_detail.php?id=108From the desk of Kevin CaronTrying to be the best me I can!www.kevincaron.comAHP Alpha Tig 200x MillerMatic 251Miller Syncrowave 200
Reply:Originally Posted by kevinacaronDo it all the time!Even made a video about ithttp://www.kevincaron.com/video_detail.php?id=108
Reply:Originally Posted by Mig welder95yeah i watched the video you said in the video you double the wire how do u do it
Reply:I clamp the ends in the vise and walk backwards. Put the other end in a drill and give it a twist!!From the desk of Kevin CaronTrying to be the best me I can!www.kevincaron.comAHP Alpha Tig 200x MillerMatic 251Miller Syncrowave 200
Reply:It is fine. ER70S-6. The E stands for electrode. The R stands for rod. Electrode means its designed to be part of the welding circuit Rod means it can be used as a filler that doesn't need to carry current --Gol'
Reply:I do the same as Kevin C and it works great. For thicker filler rod use heavier wire or tipple it and twist in the drill.Kevin
Reply:Hello all, I realize that a lot of you use RG45 and ER70S-X interchangeably. Yet, they are not the same and they do work differently from one to the other. When using RG45 for OAC vs. GTAW you will note some apparent differences and when using ER70-SX for GTAW vs.OAC you will see other differences. In most cases, if RG 45 is used for GTAW it will yield porosity in the weld deposit and other issues.Similarly, when you are using ER70-X rod/wire for OAC welding you will generally "not" see the "clean/clear" puddle that will be there when you use RG45.I know that I am splitting hairs here as a lot of the applications of this sort of thing are used in non-critical areas and don't have a great impact in the finished application. But for those who might require the "best" match and application of a filler they should pay attention to the "proper" fillers. I have included an attachment that gives the chemical make-ups of each grouping of fillers and shows some rather marked differences. Just my $.02 for what it's worth. Best regards, AllanRG 45 in upper grouping, ER70S-6 in bottom set Chemical CompositionAWSSi - 0.1%        SiliconCu - 0.3%       CopperMn - 0.05%     ManganeseCr - 0.2%        ChromiumAl - 0.02%      AluminumP - 0.035%     PhosphorusC - 0.08%       CarbonMo - 0.2%      MolybdenumS - 0.04%       SulfurNi - 0.3%        NickelAWS A5.2, R45Chemical CompositionAWSSi - 0.8-1.15%    SiliconMn - 1.4-1.85%   ManganeseP - 0.025%         PhosphorusC - 0.06-0.15%    CarbonS - 0.035%         SulfurAWS A5.18 ER70S-6aevald