PRODUCTION UPDATE: 8" SQUARES (AL) EXPECTED MID-SEPTEMBER 2026

Mutant Square

Fireball ToolSKU: F5-MUS020-FE-DS-BDK

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Material: Cast Iron + Dragon Scale
Size: 20"
Price:
Sale price$331 USD

Logo text:

The Mutant Square blends key features from both the Mega and Monster Squares. Think of it as a larger Minion Square, but with a 45-degree angle in place of the usual 60/30 configuration. Available in a 12", 10" and 8" sizes with two material choices: Cast Iron (FE) with Dragon Scale Coat or Cast Aluminum (AL)

- Includes both 90° corners and a cutaway corner for easy joint access-

- Ships with four thumbscrews and five tabs.

All 12" , 10" & 8" Squares MADE IN USA - Patented Design

How the Pros Use It

Free up joints for welding—the included L-tab keeps parts secure while leaving the corner open.

Metal corner bracket with a highlighted joint on a gray surface.

Weld inside corners with ease—this square holds a true 90° angle and gives you clearance to access the joint.

Black welding square tool positioned on a metal work surface.

Hold parts square with ease—this tool keeps everything aligned for accurate setup and welding.

Close-up of a metal bracket attached to a steel frame.
Metal right angle square on a perforated work surface.

Pros Know the Right Size Matters

Mutant 20"

Size: 20" x 20" x 3"

Flange: 3"

Aluminum (AL)

Weight: 27.6 lb

(12.5kg)

Dragon Scale (FE)

Weight: 71.4 lb

(32.4 kg)

Product Origin

Imported

Mutant 12"

Size: 12" x 12" x 3"

Flange: 3"

Aluminum (AL)

Weight: xx lb

                 

Dragon Scale (FE)

Weight: 18 lb

(8.1 kg)

Product Origin

Made In USA

Mutant 10"

Size: 10" x 10" x 2"

Flange: 2"

Aluminum (AL)

Weight: 4 lb (1.8kg)

 

Dragon Scale (FE)

Weight: 12 lb

(5.5 kg)

Product Origin

Made In USA

Mutant 8"

Size: 8" x 8" x 1.5"

Flange: 1.5"

Aluminum (AL)

Weight: 2 lb      

 

Dragon Scale (FE)

Weight: 6.7 lb

(3kg)

Product Origin

Made In USA

All You Need to Know

Close-up of a metal component with a highlighted gap.

All Mutant Square
 C-channel beam with offset web for edge-friendly use.

Aluminum (AL)

Pros

✔ Lightweight; ideal for mobile welding setups.
✔ More resistant to warping than standard aluminum billet.
✔ Naturally offers light spatter resistance.

Cons

✖ Not suited for heavy loads or frequent impacts

✖ Can dent or deform if dropped.

 

Cast Iron + Dragon Scale

Pros

✔ Built for heavy-duty projects.
✔ Extremely resistant to warping, dents, and burrs.
✔  Dragon Scale coating outperforms spatter sprays—no sprays needed.
✔ Corrosion-resistant upgrade from our previous black oxide finish

Cons

✖ Heavy; not ideal for mobile welding)

✖ Susceptible to rust.

 

Included Accessories

Our innovative tabs make welding tables optional.

  • Align perfectly in seconds
  • Skip the $1,000+ flat table
  • Tabs attach front or back

 

We reinvented the game—just twist and go. No more hunting for the right tool!

  • No hex keys or Allen wrenches
  • Adjust tabs with just your fingers
  • Quick changes, no tools needed

 

Optional Add-ons

Edge Alignment Pins

Snap on edge alignment pins to any square and get a handy overhang for lining up on different surfaces. Depending on the square, you can set it to 90°, 45°, parallel, or even 60° and 30° angles.

 

  • Pair with Monster Squares to turn them into a speed square for quick layout work
  • Mount off the edge of a table for vertical or perpendicular positioning
  • Raise the square off the surface to add clearance while fitting or welding full frames
  • Pro tip: Marking parallel lines? Pair with our shims for perfect spacing every time.

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