Mega Square

SKU: F5-MES012-FE-DS-PPK
38 reviews

Material: Cast Iron + Dragon Scale
Size: 12"
Price:
Sale price$263.00 USD

The original Mega Square is available in a 12", 8", 6" & 4" sizes with two material choices: Cast Iron (FE) with Dragon Scale Coat or Cast Aluminum (AL). All Mega Squares feature a stiff “flange and web” design that is fully machined on all outer edges with tapped holes for mounting tabs.

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

Three angle measures: 90°, 45°, and a right angle.

How the Pros Use It

Clear joint access for welding, gluing, nailing, and more—ideal for any process needing workspace around the corner.

Tabs prevent twisting and warping—creating a flat plane for square parts or round tubing to rest and align with ease.

Multiple flat surfaces make clamping quick and secure—no more fighting warped tables or overthinking your setup.

Metal rod resting in a black holder on a work surface.

Use it like a V-block—stack round tubing inside and adjust placement easily for accurate positioning during welding.

Create perfect 90° joints from table to base—use the square to align parts precisely for perpendicular welding.

Easily square parts in place—use the machined edges to position tabs or brackets exactly where you need them.

Pros Know the Right Size Matters

Size: 20" x 20" x 3"
Flange: 4"

Aluminum (AL)

Weight: x.x lb       (--g)

Cast Iron + Dragon Scale

Weight: 52.2 lb (23.67kg)

Size: 12" x 12" x 3"
Flange: 3"

Aluminum (AL)

Weight: 7.5 lb (3402g)

Cast Iron + Dragon Scale

Weight: 22.6 lb (10.25kg)

Size: 8" x 8" x 1.5"
Flange: 1.5"

Aluminum (AL)

Weight: 2.5 lb (1134g)

Cast Iron + Dragon Scale

Weight: 6.1 lb (2767g)

Size: 6" x 6" x 1.5"
Flange: 1.5"

Aluminum (AL)

Weight: 1.7 lb (760g)

Cast Iron + Dragon Scale

Weight: 4 lb (1800g)

Size: 4" x 4" x 1.5"
Flange: 1.5"

Aluminum (AL)

Weight: 1.1 lb (495g)

Cast Iron + Dragon Scale

Weight: 2.5 lb (1153g)

All You Need to Know

Metal tool with a curved edge and markings for measurement or cutting.

12″ & 20" Square
I-beam style — center-balanced and rigid.

Close-up of a metal bracket with measurement indicators.

4″ to 8″ 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

4 Edge Location Tabs

Our innovative tabs make welding tables optional.

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

 

4 Tool-less Thumbscrews

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.

Videos

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