Perfectly Sharpen Tungsten for TIG Welding!
Intro: Perfectly Sharpen Tungsten for TIG Welding!
Anyone who has TIG welded has experienced contaminating the tungsten. Whether you dipped the hot tungsten into the molten weld puddle, or touched the filler rod to the tungsten, you're guaranteed a trip to the grinder to clean up that electrode! Today, I will show you a fast and easy way to clean up and sharpen your electrode, so you can get back under the hood and lay those beads! I do all my TIG welding at TechShop in Menlo Park, CA. They have a great facility full of tools, and knowledgeable instructors to teach you how to use the machines and equipment!
Tools required:
Bench grinder
Hand drill (preferably cordless)
Belt sander (optional)
Tools required:
Bench grinder
Hand drill (preferably cordless)
Belt sander (optional)
STEP 1: Chucking Up the Tungsten in Your Hand Drill
Here are some examples of some pretty contaminated tungsten. What you wanna do now is chuck the tungsten up in the hand drill just as you would a drill bit.
STEP 2: Grinding the Tungsten
Remember, only grind tungsten on a bench grinder that is dedicated to tungsten. If you grind your electrode on a wheel that is shared by steel, you run the risk of embedding contaminants in the tungsten. Now, just as you would normally grind your tungsten (always leaving the grains from grinding, lengthwise) and making the length of the pointed cone about 2x the diameter of the electrode. Remember to nip the tip off the pointed cone so it doesn't blow off into the weld pool and further contaminate your welds. On a side note, you can further polish up the tungsten on a belt sander (also dedicated to tungsten) to get some of the grains out. This isn't totally necessary, unless you're maybe building a spaceship...
STEP 3: Look How Much Time You Saved!
Perfectly sharpened tungsten! Fantastic! And you didn't have to burn your fingertips on that small piece of tungsten like you've done in the past! This is a good point (pun intended!) if you're working in confined spaces and need to use the small back cap on the torch; you're going to need a small piece of tungsten to clear the shallow cap. And if you've ever tried grinding a 1 inch piece of tungsten, you know it gets hot, really hot! Also, you can save trips back to the grinder by grinding both ends of the tungsten, 2 for 1!
I hope you all find this instructable useful, and save some time in the process! Also if you've never been to a TechShop, find one. You can drop by anytime they are open (9am-Midnight, 7 days a week) and take a free tour of the facility.
Thanks!
-Burnt Metal
I hope you all find this instructable useful, and save some time in the process! Also if you've never been to a TechShop, find one. You can drop by anytime they are open (9am-Midnight, 7 days a week) and take a free tour of the facility.
Thanks!
-Burnt Metal
18 Comments
swaxman 8 years ago
swaxman 8 years ago
swaxman 8 years ago
pfred2 12 years ago
When you are done sharpening your cone should be three times longer than it is wide, and score marks in it should be radial, not spiraling.
Other than that you're doing a good job though :)
Burnt Metal 12 years ago
I've never seen anyone grind an electrode backwards.
I stated that a dedicated grinding wheel be used.
I'm pretty sure AWS spec is 2x diameter, at least that's what it was when I was trained by an AWS CWI (stands for American Welding Society Certified Welding Instructor).
The tooling marks are left lengthwise, spiraling isn't an issue unless you spin the drill too fast, so I'll give you that one ; )
-BM
pfred2 12 years ago
MartinZ4 8 years ago
you could try to buy from us directly .
pfred2 8 years ago
Buy what? I have boxes of tungsten electrodes now.
TIGguy 12 years ago
pfred2 12 years ago
TIGguy 12 years ago
pfred2 12 years ago
There's always three ways to do everything, the right way, the wrong way, and the Navy way!
TIGguy 12 years ago
MartinZ4 8 years ago
AdeelR 9 years ago
this trick is amazing. I think, tungsten tip is ground to different shapes, conical or something spherical. found it's dimensions and names in
http://www.weldpedia.com/2015/03/learn-to-weld-usi...
Burnt Metal 11 years ago
nthomas12 11 years ago
Noah
AR10NZ 11 years ago
Have not switched on my TIG since 2005, hope it still works, as I may use it soon. Not sure of all current "good TIG welding practices", as I am out of it, & mostly retired. For stainless, I have allways preferred a long taper on the thoriated tungsten, & lots of sharp ones in stock, for good controll of the arc.
A few years ago, I found out that the thoriated tungstens are radioactive, and the grindings are carcinogenic. In NZ, at least, there is a limit of how many of these can be stored at 1 location.
Have not done much TIG welding of Ali, but was taught to use a zirconated tungsten, started on thick copper, forming a "ball" on the tip.
Have a bit of thin wall titanium tube in hand, 19 mm O/D, 0.019 " wall, and have welded some. Suppressors are not regulated, here in NZ, and I have been involved with the use, and manufacture for many years.
Cheers.