Magic Square

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Magic Square Tolerance:
  • Magic Square
  • Magic Square
  • Magic Square
  • Magic Square
  • Magic Square
  • Magic Square
Frequently bought together:


There are so many ways to use this square it seems like Magic. It’s two squares in one- when you purchase one Magic Square you get two individual squares that also link together to form 5 different combo squares. A zinc adjustable handle provides tool-less angle adjustments.

There are so many ways to use this square it seems like Magic. It’s two squares in one- when you purchase one Magic Square you get two individual squares that also link together to form 5 different combo squares. A zinc adjustable handle provides tool-less angle adjustments. Here’s all the main ways to use the square:

Use it as an ordinary, adjustable angle square that adjusts from 40 to 180 degrees.

Right Angle 90 Degree Square with generous weld accessibility. Total height of 8” in this configuration.

Tall 12” square when fully opened and locked into place

Remove the fasteners to get two individual squares

Use the large V-groove to hold large round tubing or pipe

Switch up mating surfaces to position material in offset positions.

Put the squares back together but with the mating surfaces reversed. This allows you to use the square to hold material offset to each other.

Use a second pivot point on the square with the mating surfaces reversed to change the balance of the square, it’ll seem like an entirely different square tool!

Tips For Variable Angle Settings

One Angle Setting, Two Ways To Hold

  • Each angle you set creates two useful sets of angles on the square. You get the main angle and a complimentary angle (one acute, one obtuse)
  • The most accurate way to get an angle is to use a digital protractor. A scale is not included due to complexities in getting an accurate, high quality scale made
  • Use a 4 inch block with a flat surface as shown below to set a 90 degree angle

Quickly Set 90° Angles

Use Shims or 123 blocks

Use Mega Square

Use Minion Square

Cast Iron vs Aluminum

Cast Iron


  • Great for heavy duty projects
  • Excellent resistance to deformation and raising burrs when scratched.
  • Some natural resistance to weld spatter.


  • Heavy (Not ideal for mobile welding)
  • Susceptible to rust.



  • Lightweight (Ideal for welding on the go)
  • Resistance to deformation vs aluminum billet
  • Some natural resistance to weld spatter.


  • Can be be damaged if dropped or if used in heavy duty projects.

Dragon Scale

Fireball’s new Dragon Scale coating provides the corrosion resistance of our previous black oxide finish with the added benefit of enhanced spatter resistance. It’s spatter resistance needs to be seen to believed; it out performs even the best weld spatter sprays without the use of any sprays.

Included Accessories

6 Edge Location Tabs & Thumb Screws

Our revolutionary tabs allow you to align your material up so that you don’t even need a welding table! Don’t spend thousands on a flat table, just use our squares! Tighten the tabs onto the front or back of your square and you can immediately get to work. Sure, there are different jigs out there, but can they line your material perfectly in seconds?

Tool-less Thumbscrews

But it doesn’t stop there. We reinvented the game by introducing our thumbscrews. Say goodbye to your hex keys and freely adjust the tabs with only your fingers!

Optional Add-ons

Edge Alignment Pins

Install our edge alignment pins on any square to create a large, overhanging edge which can be used to index the square on a different plane. Depending on the square, this allows you to create edges which are 90 degrees (perpendicular), 45 degrees, parallel, and even 60 and 30 degrees from the edge.

  • Use it with our Monster squares to create a speed square for layout.
  • Use it to hang the square off the edge of a table for working vertical or perpendicular to table surface
  • Use it to elevate the squares off the ground or table for extra clearance when you’re fitting and welding entire frames
  • Tip! If trying to create a parallel edge with the mega square for marking, use our shims to get that perfect distance!

Our Other Squares

  • The Mega Square is designed to quickly set your workpiece to 90 or 45 degrees.
  • Tabs help eliminate twisting and warping in the final workpiece.
  • Clamping is simple with multiple surfaces for quick and rigid attachment.
  • Roomy joint access for welding, gluing, nailing, riveting, etc.
  • The original Monster Square is available in a 12 or 8 inch size with two material choices.
  • The Monster Square is designed to quickly set your work piece to 90 or 45 degrees.
  • Clamping is simple with multiple surfaces for quick and rigid attachment.
  • Use the radius on the tabs to use the Monster Square as a traditional speed square for layout.
  • Compact configuration for use in tight spaces.
  • 6" x 4" x 1.5", the 4" width is perfect for picket spacing on gates and fences.
  • They are the first square we offer which has a built in 60/30 degree angle.
  • The cutout provides just the right amount of joint access when using it to clamp things at 90 degrees.  
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20 Reviews

  • 4
    Magic Square

    Posted by Matt on Nov 12th 2021

    Square arrived with a hump in the center of one of the surfaces.when it was placed on a level surface it rocked. Are these made in the USA? or just say fireball tool USA?

  • 5
    Absolutely great

    Posted by Joshua Grant on Aug 5th 2021

    Sooo helpful on fabrication! We build lots of handrail for stairs and un level areas and it’s an excellent tool for that!

  • 5
    Magic Square

    Posted by Gene Temple on Jun 9th 2021

    Great piece of gear! Im very happy with these (I bought 2). They assembled nicely, once you decide to use a wrench for the handles, and seem extremely versatile. The machining is accurate, and quality, these are lifetime tools! Highly recommend to the welder or even woodworker. Yes, they cost more than the garbage at the local big-box hardware store, but they are worlds apart in quality.

  • 5
    Magic Square

    Posted by Greg on May 5th 2021

    The magic square is an excellent addition to my shop. Very handy for setting up any angle or used individually as two smaller squares. Great product.

  • 4
    Can tell a master welder, craftsman designed and created it. Very heavy duty, will last a lifetime with proper care.

    Posted by Andrew Engasser on Apr 16th 2021

    Would like to see 16mm holes in it to utilize with my fixture table.

  • 5
    Magic Square

    Posted by Kirk Shultz on Mar 3rd 2021

    I was hoping to add a picture, but last summer I found six heart shaped pieces of 1/4 inch plate in the scrap barrel of our fab shop. They had cut some parts our on the CNC plasma cutter and these hearts were left over. I decided to make a fire ring for my daughters yard, but didnt feel like doing the layout and stashed them away. I just came across them and the magic square, which I hadnt used yet wat the perfect tool for the job. I set the angle to 60 degrees and welded all the hearts make a small 18 inch fire ring. I welded a couple handles on and some stout expanded metal inside and it was done in like an hour. The square is a bit bulkier than I expected. It doesnt need to be so deep for what Ill ever use it for, but thats ok. Ill probably put some Loctite on the pivot bolt, since it tends to move and tighten up when rotating to the open position.

  • 5
    Magic square is magic

    Posted by Mike on Mar 2nd 2021

    I had no idea what a difference a good welding square could make. Bought one to see how it would work and ill be buying more. Never had a welding job turn out as square or come together so easily. Only minor complaint is the one I got didnt quite line up, maybe off by 1/32 when tightened but a quick trip through the mill solved that.

  • 5
    Magic square

    Posted by Mike on Feb 11th 2021

    Great item. Many uses in our shop. They always have great products.

  • 5
    Magic square

    Posted by Paul Nalepa on Feb 11th 2021

    One of the most versatile tools I have ever purchased! Although I’ve only had it one week I’ve already found a ton of uses for it.

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