Weld appearance

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I've been MIG welding with my Miller mm210 for about 5 years, and notice that my welds, while getting good penetration, don't look like the "stack of dimes" I see in many pics.  My "stack" looks much closer together.What makes the stack of dimes?  I'm not necessarily worried about repeating the appearance, but am curious how others might be controlling the puddle.  For example, I continuously circle the tip when I get my close-packed set of "dimes".  Do others swirl less, or move the tip between swirls?  This is all with C25 and solid wire.Thanks for any input,Ian
Reply:Picts of your welds would help. Note that mig generally doesn't leave that "stack of dimes " look. Thats tig or in some cases stick. Often a good loking mig weld will just be smooth with no "dimes". In some cases it's possible to use techinque to produce that look, but it's usually secondary to making a good weld. If you are making good welds that pass testing, don't be concerened that they don't look like tig welds. Thats the nature of mig welds. If the client wants that "tig" look, then the process should probably be tig not mig.Here's a very good example of a textbook mig weld done by one of the members here. Note it doesn't look at all like a "stack of dimes". Attached Images.No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan