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Marcel Builds A Bumper

How It's Done
February, 2009
By Eric Geisert
Maserati Bumper Whatthehaye
One of the scratchbuilt creations... 
   
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Maserati Bumper Whatthehaye
One of the scratchbuilt creations to come out of Marcel's Custom Metal Shaping, the Whatthehaye, eventually sold for $540,000 at the 2005 Barrett-Jackson auction in Scottsdale, AZ. If they can build a car like this from the ground up, then a simple Maserati bumper should be no trouble at all!
Maserati Bumper Vintage Maserati Bumper
Here's what Marcel started... 
   
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Maserati Bumper Vintage Maserati Bumper
Here's what Marcel started with: a vintage Maserati bumper that has seen better days. It was full of pits, had been crunched a few times and sort of straightened, and its old age made it too brittle to repair. But Marcel used the old bumper as a buck/form to create a new replica bumper.
Maserati Bumper Paper Template
Most round pieces used on... 
   
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Maserati Bumper Paper Template
Most round pieces used on a project start with paper templates cut to the shape of the piece to be copied. Those shapes are then transferred to 16-gauge commercial-grade steel sheet, then trimmed a little oversized with hand shears (you'll see why later). The piece on the right is the top right corner section of the new bumper after it was run through the Eckhold Piccolo machine.
Maserati Bumper Piccolo Machine
Marcel works the metal through... 
   
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Maserati Bumper Piccolo Machine
Marcel works the metal through the Piccolo machine so it starts to bend and shape the bumper's corner.
Maserati Bumper Bumper Fit
After a few passes, the section... 
   
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Maserati Bumper Bumper Fit
After a few passes, the section is checked for fit on top of the old bumper.
Maserati Bumper Metal Shaping
A little bit of ol'-fashioned... 
   
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Maserati Bumper Metal Shaping
A little bit of ol'-fashioned hammer-to-tree-stump...
Maserati Bumper Bumper Shape
...moves the metal into shape... 
   
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Maserati Bumper Bumper Shape
...moves the metal into shape faster than the Piccolo can.
Maserati Bumper Bumper Fitting
Again, another trial fit finds... 
   
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Maserati Bumper Bumper Fitting
Again, another trial fit finds it's getting close. Marcel knows that fitting a bumper to the outside of the old bumper won't yield a clone of the old bumper, but the customer wanted something that looked close and would fit, which is what he'll get.
Maserati Bumper Metal Bumper Shaping
The machines and tree stump... 
   
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Maserati Bumper Metal Bumper Shaping
The machines and tree stump can only do so much--extreme shaping is done with a hammer and torch, so the section is first clamped in place.
Maserati Bumper Shaping Metal
The corner to be shaped is... 
   
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Maserati Bumper Shaping Metal
The corner to be shaped is heated with a torch flame to white-hot.
Maserati Bumper Bumper Forming
Marcel follows with a large... 
   
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Maserati Bumper Bumper Forming
Marcel follows with a large hammer and begins to form the now-pliable metal against the old bumper.
Maserati Bumper Metal Bumper
The metal has been slapped... 
   
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Maserati Bumper Metal Bumper
The metal has been slapped and hammered to fit the old bumper, with a little bit of lip hanging over (on both the top and bottom of the piece).
Maserati Bumper Planishing Hammer
Once the basic shape is realized,... 
   
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Maserati Bumper Planishing Hammer
Once the basic shape is realized, Marcel uses the planishing hammer to smooth out the rough spots caused by the heavy hammer blows.
Maserati Bumper Bumper Corner
After the work done on the... 
   
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Maserati Bumper Bumper Corner
After the work done on the planishing hammer, the section looks very much like what it is supposed to.
Maserati Bumper Bumper Corner Piece
The bottom section of the... 
   
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Maserati Bumper Bumper Corner Piece
The bottom section of the corner is then made the same way as the top piece, and the two pieces are then trimmed to fit and welded together.
Maserati Bumper Weld Grinding
After a little bit of weld... 
   
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Maserati Bumper Weld Grinding
After a little bit of weld grinding, Marcel is ready to move onto the center section.
Maserati Bumper Paper Template
Again a paper template is... 
   
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Maserati Bumper Paper Template
Again a paper template is used to show the shape needed for the center section.
Maserati Bumper Plasma Cutter
Using a plasma cutter, Marc... 
   
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Maserati Bumper Plasma Cutter
Using a plasma cutter, Marc follows the template shape to make a forming die out of 3/4-inch steel plate.
Maserati Bumper Forming Die
Roughed out with the plasma... 
   
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Maserati Bumper Forming Die
Roughed out with the plasma cutter, this is what the forming die starts as.
Maserati Bumper Die Shape
The template is used to double-check... 
   
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Maserati Bumper Die Shape
The template is used to double-check the die's shape.
Maserati Bumper Bottom Die
Here's what the bottom die... 
   
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Maserati Bumper Bottom Die
Here's what the bottom die looks like after some smoothing from the grinder.

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