SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/weld-fillet-gun-angle

What gun angle does Miller suggest for a MIG fillet weld?

45 degrees.

Start playing free

  1. 45 degrees ✔
  2. 90 degrees
  3. 10 degrees

Why: A fillet weld sits in the corner of two pieces, so aim at the middle of that corner at 45 degrees. A butt joint uses 90 degrees to the work.

Huh, didn't know that: Miller suggests a travel angle of 15 degrees as a good starting point.

The dad joke
Why did the obtuse angle go to the beach? Because it was over 90 degrees.
Like this card?
Play the game

References

Answer: 45 degrees. A fillet weld sits in the corner of two pieces, so aim at the middle of that corner at 45 degrees. A butt joint uses 90 degrees to the work.

  1. MIG Welding Tips and Techniques for Beginners (Miller) www.millerwelds.com/en-us/resources/knowledge-hub/mig-welding/how-to/mig-welding-tips-and-techniques-for-beginners
    Use a 45-degree angle.
    Checked 2026-10-10.

Think this answer is wrong? Tap "Challenge this answer" on the card in the game and tell us why.

Test yourself in the game

Trades & ShopA typical MIG stickout is about how long?Trades & ShopWhat polarity does MIG welding of mild steel use?Trades & ShopWhat is the most common shielding gas mix for MIG welding mild steel?

That's stuff everyone should know.