Brad-ManQ45 Posted June 20, 2004 Share Posted June 20, 2004 If you are going to be building cages/Roll Bars for NHRA using 4130, the rules state TIG is mandatory. For mild steel, MIG or TIG. Please note the following phrasing: All 4130 chrome moly tube welding must be done by approved TIG heliarc process; mild steel welding must be done by approved MIG wire feed or approved TIG heliarc process. IIf this is going to be a for-money operation, then I don't see how you can NOT have a MIG setup for the mild steel/autobody/exhaust work. On the other hand, for serious racing you NEED the TIG - no doubt. Assuming you need to meet NHRA guidelines then: My advice (and I'm sure it's not worth that much to you) is get something like the new Hobart 140 which is supposed to be great for sheetmetal/exhaust/mild steel AND the best TIG you can afford. For the type of aluminum you are talking about, the Miller Syncrowave 180 would work. The two together would cost less than the pulser. For that matter, the MM210 and Syncrowave would not be much more than the pulser and still below $3k...but if you wanted to run them both at the same time you'd need 2 outlets...(I was assuming that you have the 120V for the 140) Production-wise if this is a one-man shop you win because those things you CAN use MIG for will take less time to complete and the consumables will cost less. It doesn't take that much practice to start getting good welds with MIG. Even if it is not a one-man shop, and you have two people that can weld, having two machines means potentially more production when one doesn't have to wait on the other. Consumables for TIG do run more. As far as the Invertig: The Invertig 201 is made by Stel in Italy - HTP is only a reseller - I don't know how good the parts availability would be on it if something went wrong, but have heard that customer service is good, prompt and technically competent. I still would worry about parts... Once again JMOVHO - use the process that best meets the needs. Having both would certainly give you flexibility. Quote Link to comment Share on other sites More sharing options...
grumpyvette Posted June 21, 2004 Author Share Posted June 21, 2004 thank you again, all that info helps! Quote Link to comment Share on other sites More sharing options...
Brad-ManQ45 Posted June 21, 2004 Share Posted June 21, 2004 Please let us know what you decide! Quote Link to comment Share on other sites More sharing options...
johnc Posted June 21, 2004 Share Posted June 21, 2004 The Invertig 201 is made by Stel in Italy FYI... I'm pretty sure the Lincoln Invertig 205 is the made by the same folks. Quote Link to comment Share on other sites More sharing options...
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