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Tungsten electrodes are available in Thoriated, lanthanated, ceriated, and a few other varieties. When you are welding steel, they all have one thing in common.

They need to be sharp. But is it really that important to sharpen them the way the welding textbooks describe?

I have been TIG welding for over 30 years and have sharpened tungsten electrodes all kinds of ways. Even with a cutting torch. That's right I said cutting torch. I don't recommend it, but it does work. I have also used Chem-Sharp, belt sanders, small 90 die grinders, bench grinders, big electric grinders, and even the new high dollar tungsten electrode grinders.

The bottom line is this. Unless you are welding razor blades, a lot of the anal retentive textbook methods for sharpening tungsten electrodes just don't make much difference. I know I am going to get a lot of hate mail over this but it's just plain true. Like most welders, I was taught in welding school that a bench grinder with a stone devoted exclusively for tungsten was the only way to sharpen tungsten. And that all the scratches from grinding had to run parallel with the electrode.

Then I got a job.

The real world has a way of separating the BS from the down and dirty stuff that really works and Its kind of hard to sharpen a tungsten to textbook standards when you are up 60 feet in the air on a scaffold and need to tie in a weld before the next wave of steam leaks past the safety valve. And If you have a small grinder in your tool bucket you do the math pretty quick and give it a try. I learned quickly that as long as I used a smooth enough grinding disc, spiraling grinding marks be damned, everything turned out fine. A couple of hundred good x rays without a tungsten grinder also tend to make you think you are not doing everything wrong.

So is this whole tungsten electrode sharpening thing getting Big-Dealed?

Yes and No. It definitely sells tungsten sharpeners.

Seriously, I can think of a few applications where textbook tungsten sharpening is important . Razor blade type thicknesses would be one, Another example is for automated processes like orbital TIG welding. In orbital TIG welding it is pretty common to join stainless or titanium tubing that is only ¼ " in diameter with wall thickness of less than .030". Amperage for these type welds is very low and even small changes in tungsten electrode preparation can really make a difference. Since the geometry of an electrode tip definitely does have an effect on the arc, you will want to use a special tungsten grinder to get every taper and tip consistent so that when something goes wrong, you can eliminate tungsten preparation as a variable.

But If you are TIG welding something like a 1/8" thick bracket for a set of headers, Don't sweat it. Just use a clean sharp electrode sharpened however you choose and weld the dog crap out of it.

Read more down and dirty stuff about tungsten electrodes and plenty of other Down and Dirty welding tips. For TIG, MIG, STICK and a buttload of other welding information, visit http://www.weldingtipsandtricks.com/

Quot;china Valve City" - Longwan Valve Has A Strong Development Momentum

Longwan valve of international industrial transfer as an opportunity to science and technology innovation and development as the guide to the "China Valve City" regional brands as the carrier, so that enterprises in the fierce competition in the market has continuously grown bigger and stronger, valve industry show a strong momentum of development.

    

    Up to now, the existing professional Longwan valve more than 1420 manufacturing enterprises, employing four thousand people, more than 100 above-scale enterprises. Longwan production of stainless steel valves about 20 million tons, accounting for more than 40% of total output; stainless steel ball valve, Nissan 120 thousand, accounting for more than 70%. Industrial scale and economic effects occupy an important position in the domestic first half of 2009 in the valve industry in the country, ranking among the top 20 industrial output value of enterprises, enterprises accounted for three Longwan valve. Not only can a few other domestic scale valve manufacturing base comparable to, or even beyond the trend.

    

    In 2007, according to industry statistics, achieved a total output value of mechanical valves Longwan more than 60 billion yuan; 9.0 billion in output value in 2008; in 2009 even if the financial crisis hit, Longwan valve industry output remains positive growth, has become a Longwan District to increase revenues, employment placement, expand export and promote development of national economy's pillar industries.

     

    Today, the pace of industrial development, business density and economic output makes longwan large valve showing dazzling light, "more, the whole, big, wide, good, high" six major bright spot is with the "China Valve City" This is relative to shine a national gold card, which greatly improved the regional brand longwan valve.

"More" is the variety. Longwan valve has reached more than 2000 kinds of product categories, specifications reach more than 30,000 and will thus become the common variety of mechanical valves, one of the most complete production bases.

    

   "All" is the whole package. Longwan has formed a mold production to processing, forging, casting, throwing sand, assembly, packaging, etc. 7 links specialized division of labor supporting industrial chain.

    

   "Big" is a large market. In the international or domestic market, Longwan valve products in China, similar products are accounted for more than 40% market share, products are exported to Europe and the United States, Japan and Southeast Asia more than 100 countries and regions at the same time, but also according to different countries and regional standards separately to organize production.

"Wide" is the network wide. Longwan the local distribution companies valve market reached 251 across the country set up the valve outlets and offices in nearly 1800, the region formed a specialized division of labor, all sectors are closely linked to the manufacture and marketing system.

   

   "High" is the high content. Sinopec 53 equipment suppliers have a 7 Longwan on the state high-tech enterprise Longwan district 6, the valve industry accounted for 4.

   "Good" is a good brand. More than 400 Longwan passed ISO9000 certification, passed the AZ certificate 49, a number of companies to apply for the API, CE, TS, KS and other types of quality system certification, 10 valves institutes with a total 368 patents invention patents 42. Emergence of a group in the domestic market reputation of the well-known enterprises.

   

    The face of the financial crisis has led to sluggish external demand products, construction costs, and many other negative factors, the market for decades after fighting waves of Longwan valves, industrial development ideas more clearly, more and more quasi-industrial location, industrial-scale Vietnam to larger displays increasingly exuberant vitality.
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Bleeding brakes on a '73 vette.?

In the manual I got from stainless steel brake corp along with my set of 4 new 4 piston calipers ( don't trip, the kit was only 470 bucks) they say a good method for bleeding the brakes is to use a gravity bleeding methode,, that is "leave all caliper bleed screws open with the rear of the car raised to 15" at the rear axel shafts. Observe each bleeder valve untill fluid begins to flow out, shut off valve as as fliud appears at each valve" that's it. they say this is the recomended method. do you think this will work?

Also, the brakes are constant contact type and I am changing the rotors also with a set from fast corvettes,, they say a run out of over .005 in may cause air in tghe lines,, I have no way of measuring the run out,, do you think it will be ok odr should I have it checked. If so, what is a good national brand shop to take the car to to have it checked?

gravity bleeding works great, u may have 2 manually bled a couple of pumps last to get rid of the last of the air.
corvette brake are fun about air, the seam to make their own air. going to stainless steel calipers help alot. if the brakes don/t pulsate then they are ok.

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