Whats the best size Filler rod to use for Tig welding?
Unfortunately, there is no correct answer.
But there are some guidelines.
Rules of Thumb if you will ...
for picking the right Filler rod size.
So in this weeks video, I am going over a few tips for filler rod size...and also I am wrapping up a the testing of a new product.
The product I am testing out in this video is called the Fupa #12 tig cup and its made by Michael Furick. @mfurick if you are on instagram.
I met Michael at fabtech 2014 where he handed me one of his cups.
Bit I like to test things before I add them to the weldmonger store
If they dont pass the test, they dont make it to the store.
I pay attention when someone posts a great looking weld on instagram.
especially when they take the time to list details like filler wire size... or answer questions about the other details they used to make the weld.
One thing I have noticed is that a lot of the folks making really nice looking tig welds are using relatively small filler wire.
At least compared to what I see other folks using on YouTube.
The fupa 12 cup has some limitations.
Its rated for 175 amps...and if you drop it without the titanium cover on it, it will probably break.
So I set out to test the Fupa 12 thoroughly by welding at 150-160 amps on a thick chunk of steel that is a mock up of a bearing mount.
Using a positioner, I welded each pass non stop and since my positioner was set to around 1 rpm, that made for around 70 seconds by the time I overlapped and tapered amperage.
I have been using the Fupa 12 cup for quite a while now, using very long stickouts, and using high amperage.
Sometimes, the job calls for either a tiny diameter tig cup, or a very long stickout.
The problem with a really small tig cup is gas coverage. Its usually not very good.
But using the fupa 12 cup, and a one inch stickout, lets you get in some pretty tight areas and still maintain good argon shielding.