Fireball Tool Monster Square - Cast Iron + Dragon Scale Coat / 12" is backordered and will ship as soon as it is back in stock.
This item ships directly from Fireball Tool and is not eligible for Weldmonger free shipping promotions. Shipping is calculated separately at checkout.
Ordering other Weldmonger products? Your order may arrive in multiple shipments.
Fireball Tool Monster Square
The Fireball Tool Monster Square is a heavy-duty welding and fabrication square built to make accurate fit-up faster, easier, and more repeatable.
Unlike a traditional machinist square or speed square that's primarily used to check your work after setup, the Monster Square is designed to help you position and hold your material square from the start.
Use it to quickly establish 90° or 45° angles, align tubing and plate, prevent parts from twisting during fit-up, and create repeatable welding setups without having to build a dedicated jig for every project.
Available in multiple sizes and your choice of Cast Aluminum or Cast Iron with Dragon Scale coating, there's a Monster Square for everything from smaller bench fabrication to large frames and heavy shop work.
Good welding starts with good fit-up.
The Monster Square provides rigid, machined reference surfaces that make it easier to position your material before you ever strike an arc.
Use it for:
90° welding and fabrication fit-up
45° setups
Square and rectangular tubing
Frame fabrication
Gate and railing work
Plate and structural fabrication
Tack welding
Repeatable production setups
Round tubing
Welding table setups
General fabrication and assembly
Clamp the material into position, verify your setup, tack the assembly, and move on.
The Monster Square is designed to quickly position workpieces at 90° or 45°.
That makes it useful for everything from basic square frames to angled braces and more complex fabricated assemblies.
Instead of repeatedly measuring diagonals and adjusting parts by hand, use the Monster Square as a solid reference during fit-up.
Every Monster Square uses Fireball Tool's stiff flange-and-web construction.
The design provides multiple rigid surfaces for positioning and clamping while keeping the tool open enough to work around the joint.
The outer edges are fully machined, providing accurate reference surfaces for fabrication and layout work.
Fabricated assemblies rarely give you one perfect place to put a clamp.
The Monster Square provides multiple clamping surfaces, allowing you to secure the square and workpiece from different directions depending on the project.
This makes it easier to get a solid setup around tubing, frames, plate, and irregular assemblies.
Monster Squares feature tapped mounting holes for Fireball Tool alignment tabs.
The tabs create additional reference surfaces that help keep your material aligned with the square and reduce twisting during fit-up and welding.
They can be installed on the front or back of the square, giving you flexibility depending on the orientation of your project.
The tabs can also help position round tubing, adding even more versatility to the square.
The Monster Square isn't limited to checking corners.
Use the square and alignment tabs to establish a known distance and position material parallel to another workpiece.
Once the spacing is set, clamp everything into position and maintain that alignment through the fit-up process.
This can be especially useful for:
Frames
Crossmembers
Gates
Railings
Repetitive assemblies
Parallel tubing layouts
Choose the Monster Square that fits the scale of your fabrication work:
4" Monster Square
6" Monster Square
8" Monster Square
12" Monster Square
Smaller versions are great for tighter spaces and bench fabrication, while the larger Monster Squares provide more reference surface for larger tubing, frames, and structural projects.
Fireball Tool states that the 8" and 12" Monster Squares are made in the USA.
The Cast Aluminum Monster Square gives you a lighter, more portable fabrication square that's especially useful for mobile welding and field work.
Lightweight and easy to move
Great for mobile welding setups
Completely rust-proof
Naturally offers some weld-spatter resistance
Can act as a large heat sink when working with thin material
Easier to handle on large or awkward assemblies
For fabricators who constantly move their tooling around the shop or take it into the field, aluminum keeps the Monster Square easier to manage.
For demanding shop use, choose the Cast Iron Monster Square with Dragon Scale coating.
The cast iron construction provides excellent rigidity and resistance to warping, dents, and burrs, making it well suited for heavy fabrication and frequent clamping.
Fireball Tool's Dragon Scale coating adds enhanced resistance to weld spatter, corrosion, and everyday wear.
Heavy-duty construction
Extremely resistant to warping
Resistant to dents and burrs
Excellent stability during fabrication
Dragon Scale anti-spatter coating
Improved corrosion resistance compared with Fireball's previous black oxide finish
Ideal for fabrication tables and demanding shop environments
Add Fireball Tool Edge Alignment Pins to expand what you can do with the Monster Square.
Depending on your setup, alignment pins can help you:
Use the Monster Square like a traditional speed square
Position the square off the edge of a table
Create vertical or perpendicular setups
Raise the square for additional clearance
Establish parallel layout references
They're a useful addition for fabricators who want to get even more versatility out of their square.
Heavy-duty welding and fabrication square
Designed for fast, accurate fit-up
Quickly establishes 90° and 45° angles
Rigid flange-and-web construction
Fully machined outer edges
Multiple clamping surfaces
Tapped holes for alignment tabs
Tabs can mount on the front or back
Helps prevent material from twisting during fit-up
Alignment tabs can also help position round tubing
Useful for parallel material setups
Available in 4", 6", 8", and 12" sizes
Available in Cast Aluminum
Available in Cast Iron + Dragon Scale
8" and 12" versions are Made in the USA
Compatible with optional Fireball Tool Edge Alignment Pins
Patented Fireball Tool design
A traditional square can tell you when your project isn't square.
The Fireball Tool Monster Square is designed to help you get the parts square in the first place.
Position your material, use the alignment tabs to control twist, clamp everything solid, and tack the assembly while it's held where you want it.
For frames, tubing, gates, railings, and everyday fabrication, the Monster Square turns one of the most time-consuming parts of welding—fit-up—into a faster and more repeatable process.
Set it. Clamp it. Tack it. Keep building.
Payment methods
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Fireball Tool develops purpose-built tools for welders, fabricators, machinists, and makers who expect more from their shop equipment.
From innovative welding squares and fixture-table systems to clamps, layout tools, hand tools, and shop accessories, Fireball products are designed around solving real fabrication problems.
Weldmonger is proud to offer Fireball Tool products alongside the welding equipment and accessories we use and recommend every day.
Fireball Tool Lumber Maximus Clamp 2" x 4" (Single Clamp Set)
Fireball Tool Maximus Bar and Dog Clamp (2 Sets of Clamps)
Fireball Tool Magnetic Hex Key Holder (ABS)
Fireball Tool Mystic Square 16"
Fireball Tool products purchased through Weldmonger are fulfilled and shipped directly from Fireball Tool.
No. Fireball Tool products are excluded from Weldmonger free shipping promotions. Applicable shipping charges are calculated separately at checkout.
Because Fireball Tool products ship directly from Fireball Tool, your order may arrive in multiple shipments.
Yes. Tracking information will be provided once it becomes available for your shipment.
Delivery times depend on your location and selected shipping service. Fireball Tool currently states that processed orders generally take 5–7 business days to arrive.
If you purchased through Weldmonger, contact the Weldmonger team with your order information and we'll help you out.
The Fireball Tool Monster Square is a heavy-duty welding and fabrication square built to make accurate fit-up faster, easier, and more repeatable.
Unlike a traditional machinist square or speed square that's primarily used to check your work after setup, the Monster Square is designed to help you position and hold your material square from the start.
Use it to quickly establish 90° or 45° angles, align tubing and plate, prevent parts from twisting during fit-up, and create repeatable welding setups without having to build a dedicated jig for every project.
Available in multiple sizes and your choice of Cast Aluminum or Cast Iron with Dragon Scale coating, there's a Monster Square for everything from smaller bench fabrication to large frames and heavy shop work.
Good welding starts with good fit-up.
The Monster Square provides rigid, machined reference surfaces that make it easier to position your material before you ever strike an arc.
Use it for:
90° welding and fabrication fit-up
45° setups
Square and rectangular tubing
Frame fabrication
Gate and railing work
Plate and structural fabrication
Tack welding
Repeatable production setups
Round tubing
Welding table setups
General fabrication and assembly
Clamp the material into position, verify your setup, tack the assembly, and move on.
The Monster Square is designed to quickly position workpieces at 90° or 45°.
That makes it useful for everything from basic square frames to angled braces and more complex fabricated assemblies.
Instead of repeatedly measuring diagonals and adjusting parts by hand, use the Monster Square as a solid reference during fit-up.
Every Monster Square uses Fireball Tool's stiff flange-and-web construction.
The design provides multiple rigid surfaces for positioning and clamping while keeping the tool open enough to work around the joint.
The outer edges are fully machined, providing accurate reference surfaces for fabrication and layout work.
Fabricated assemblies rarely give you one perfect place to put a clamp.
The Monster Square provides multiple clamping surfaces, allowing you to secure the square and workpiece from different directions depending on the project.
This makes it easier to get a solid setup around tubing, frames, plate, and irregular assemblies.
Monster Squares feature tapped mounting holes for Fireball Tool alignment tabs.
The tabs create additional reference surfaces that help keep your material aligned with the square and reduce twisting during fit-up and welding.
They can be installed on the front or back of the square, giving you flexibility depending on the orientation of your project.
The tabs can also help position round tubing, adding even more versatility to the square.
The Monster Square isn't limited to checking corners.
Use the square and alignment tabs to establish a known distance and position material parallel to another workpiece.
Once the spacing is set, clamp everything into position and maintain that alignment through the fit-up process.
This can be especially useful for:
Frames
Crossmembers
Gates
Railings
Repetitive assemblies
Parallel tubing layouts
Choose the Monster Square that fits the scale of your fabrication work:
4" Monster Square
6" Monster Square
8" Monster Square
12" Monster Square
Smaller versions are great for tighter spaces and bench fabrication, while the larger Monster Squares provide more reference surface for larger tubing, frames, and structural projects.
Fireball Tool states that the 8" and 12" Monster Squares are made in the USA.
The Cast Aluminum Monster Square gives you a lighter, more portable fabrication square that's especially useful for mobile welding and field work.
Lightweight and easy to move
Great for mobile welding setups
Completely rust-proof
Naturally offers some weld-spatter resistance
Can act as a large heat sink when working with thin material
Easier to handle on large or awkward assemblies
For fabricators who constantly move their tooling around the shop or take it into the field, aluminum keeps the Monster Square easier to manage.
For demanding shop use, choose the Cast Iron Monster Square with Dragon Scale coating.
The cast iron construction provides excellent rigidity and resistance to warping, dents, and burrs, making it well suited for heavy fabrication and frequent clamping.
Fireball Tool's Dragon Scale coating adds enhanced resistance to weld spatter, corrosion, and everyday wear.
Heavy-duty construction
Extremely resistant to warping
Resistant to dents and burrs
Excellent stability during fabrication
Dragon Scale anti-spatter coating
Improved corrosion resistance compared with Fireball's previous black oxide finish
Ideal for fabrication tables and demanding shop environments
Add Fireball Tool Edge Alignment Pins to expand what you can do with the Monster Square.
Depending on your setup, alignment pins can help you:
Use the Monster Square like a traditional speed square
Position the square off the edge of a table
Create vertical or perpendicular setups
Raise the square for additional clearance
Establish parallel layout references
They're a useful addition for fabricators who want to get even more versatility out of their square.
Heavy-duty welding and fabrication square
Designed for fast, accurate fit-up
Quickly establishes 90° and 45° angles
Rigid flange-and-web construction
Fully machined outer edges
Multiple clamping surfaces
Tapped holes for alignment tabs
Tabs can mount on the front or back
Helps prevent material from twisting during fit-up
Alignment tabs can also help position round tubing
Useful for parallel material setups
Available in 4", 6", 8", and 12" sizes
Available in Cast Aluminum
Available in Cast Iron + Dragon Scale
8" and 12" versions are Made in the USA
Compatible with optional Fireball Tool Edge Alignment Pins
Patented Fireball Tool design
A traditional square can tell you when your project isn't square.
The Fireball Tool Monster Square is designed to help you get the parts square in the first place.
Position your material, use the alignment tabs to control twist, clamp everything solid, and tack the assembly while it's held where you want it.
For frames, tubing, gates, railings, and everyday fabrication, the Monster Square turns one of the most time-consuming parts of welding—fit-up—into a faster and more repeatable process.
Set it. Clamp it. Tack it. Keep building.
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