DMZ Signature Truck Bumper

Functionally and aesthetically, your front bumper sets the tone for the rest of your truck. It's also one of the first fabrication projects you should tackle. If you've got aspirations of building full-on competition-worthy rollcages and suspension parts, then you'd do well to back off and hone your skills on a bumper first.

There are a few reasons bumpers make great first projects. Front bumpers play an important role protecting your radiator, grille, oil pan, and front suspension. Rear bumpers guard against impacts from behind and can double as mounting bases for spare tires, jacks, and toolboxes. Bumpers can be built as simply or as intricately as your imagination and skills allow. Bumpers attach to readily accessible mounting points, so they're easier to build compared to engine cages and cab cages where drivetrain and interior parts make access difficult. Should your metallic attempt at a bumper not turn out so well, it's a simple deal to remove it and start anew.

To show how it's done the right way, we paid a visit to DMZ (Duncan Metal Zone). Tim Duncan and Anthony DeWitt used their considerable arsenal of tools and skills to produce what you see in the opening photo. Follow along, dream big, and start your project.

The first step is to find the bumper's mounting points. The stock bumper bolts to the front and sides of the framehorns. Bumpers can be built to weld or bolt to the frame. Tim decided to go the weld-on route. The stock mounting bolt plates were cut off the front of the frame.	The side mounts were beefed up with a bit of 1/8-inch plate. This will be the mounting base for the new bumper's side supports.	The DMZ signature bumper centers around a pair of beefy boxed section spars that weld to the front of the frame. The spars are made from 1/8-inch steel plate, but a pair of tubes can be used if you don't have the equipment to cut and shape plate steel. When it comes to working with plate, Tim and Anthony have a huge advantage: an optical tracer-guided plasma-cutting system. An optical eye follows a line on a paper pattern, and the plasma torch cuts that same pattern into the plate. This system is easy to set up and operate and costs a fraction of the price of a CNC-cutting system.
The spar's bottom panel gets dimple-died. The dimple dies add strength and visual appeal. Holes were cut first using an annular-style hole saw mounted in a drill press. A press brake was used to operate the dimple dies, pressing the final shape into the plate.	The four panels were tacked together. A square was used to ensure accuracy during assembly. Although 1/8-inch plate is relatively thin, the boxed construction and dimple-died front panel add up to bigtime strength.	After tack welding, the final beads were burned in. The spar is now ready to mount to the frame.
Anthony tack welds the driver-side spar in place.	Two bends were used to form the main bar. DMZ uses an air-over-hydraulic assist to power its bender. To make sure the bends were symmetrical, the extension of the hydraulic ram was measured, and that measurement was matched side-to-side. It's best to match the bumper's lines to the body lines of the truck, as opposed to using a level. If the vehicle isn't level, and the bumper is, then the bumper will look crooked. Build the bumper to match the body lines.	Done. The twin spars and the main bar are the foundation for the rest of the bumper.
The ends were wrapped around the main bar and welded into place.	Next, a pair of 1.75-inch, 0.120-wall tubes was placed between the main bar and the front suspension's lower crossmember. This adds strength to the bumper, guards the front suspension, and protects the radiator.	As always, measurements were taken during the fitment process to make sure tubes ended up where they were intended to.
This tube bridges between the main-bar-to-suspension tubes, further strengthening the assembly and adding an additional mounting point for the next-to-be-made aluminum skidplate.	A cardboard template was cut and shaped to the desired pattern.	The template pattern was traced onto the aluminum. Aluminum plate is soft enough to cut with a fine-tooth wood-cutting blade. Strips of masking tape protect against scratches from the saw's base. The saw was loud, and chips of aluminum were flying everywhere, which is why Tim and Anthony wore safety glasses and earmuffs.
Seven mounting tabs gave the skidplate a home on the tubing. The skidplate could've been made from two pieces instead of one, but a single-piece plate makes it easier to glide over obstacles when they're encountered. Note the bumper's approach angle."If the bumper and skidplate are too vertical, then the skidplate won't go up and over when it hits something. It becomes a plow instead," says Tim.	Details like the end caps make for a professional, clean look. No plasma system? A Sawzall and a grinder can create the same thing, but it takes more time.