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Carry Metalflake in Waterborne Clear

By John Gilbert   –   Photography by Tom Koppinger & Doug Jerger

The range of colors for custom car paint expanded in 1960 with the introduction of metalflake to the public. The late 1950s and early 1960s experienced a renaissance with the popularity of Candy Apple Red and pearlescent white, soon followed by a variety of sparkling metalflake colors.

02 1930s Ford coupe body and door primed gray masked for custom painting
Step 1: After metal conditioning the bare steel body and parts, Doug sprayed Squeeg’s Kustoms proprietary DTM (direct-to-metal) epoxy primer, enriched with zinc phosphate, to inhibit rust.

The story of metalflake’s origins begins in 1957 when the Dow Chemical Company acquired the Dobeckmun Company, making Dobeckmun a division of Dow Chemical. Dobeckmun, short for Dolan, Becker, and Munson, was a major manufacturer of cellophane and foil packaging before being acquired by Dow.

03 Technician prepping 1930s Ford coupe body for metallic paint application
After Doug sanded Squeeg’s epoxy primer with 320-grit sandpaper, he then used compressed air with a tack rag to remove the sanding dust. Followed with spraying white PPG DPLF 48 wet-on-wet as a sealer.

In early 1959, automotive designer Stefan Boran discovered a new product Dobeckmun produced by cutting aluminum foil into microscopic squares and trademarked it as metalflake, which could be produced in large quantities at low cost. Boran recognized the potential for metalflake to become a custom car finish and collaborated closely with Dobeckmun to develop enough product to supply George Barris with experimental silver metalflake for the XPAK 400 air car Barris debuted at the National Championship Show in Detroit.

04 PPG metallic purple paint mixing cups for classic car custom paint job
In the gallon bucket, mix PPG 51594 Lilac for the base color. While the sealer is still wet, spray the Lilac base color on top.

Hot Rod magazine, familiar with George Barris’ experimentation with metalflake, contacted Dobeckmun’s West Coast reps, Fred Bell and Tom Conlin, to gather enough pounds of metalflake to custom paint three cars, each using a different application method. The original metalflake came in two grades; type 1 being coarser, with 1 pound containing roughly 385 million flakes. After Barris’ XPAK 400, the first car to be “flaked” was the Bob McGee roadster owned at the time by L.A. Roadsters member Dick Scritchfield. At Sid Langley’s Service Center in Eagle Rock, California, Scritchfield and Langley’s painter Bill Kagele experimented with translucent red toners to create a purplish candy Magenta color over a silver metalflake base.

05 Spray painting interior of 1930s Ford coupe door with metallic purple finish
For applying the Lilac base color to the doors and hood, the parts were suspended on custom-fabricated racks by Squeeg. Notice the unusual crossbar at the base.

The second car with metalflake was LeRoi “Tex” Smith’s battered 1950 Buick four-door sedan, painted at Dean Jefferies Studio of Style in Hollywood. Jefferies’ approach to the 1950 Buick, which he called a “quickie” job, involved minimal sanding before applying blue metalflake mixed in clear acrylic lacquer over gray primer as a base. Jefferies’ experiment was to see if metalflake could cover deep sanding scratches and hide the gray primer from view.

06 Technician applying metallic purple paint to 1930s Ford coupe in booth
The doorjambs were sprayed in the Lilac base color with the doors removed, and there was no concern about a slight overspray reaching the outside of the body.

The answer to Jefferies’ Buick experiment was “no,” so from that conclusion onward, Jefferies advised custom painters to tint a base color to match the ’flake. A matching color base is exactly how metalflaking Scritchfield’s 1932 roadster was achieved. A silver base with silver metaflake sprayed on top, then a translucent candy color, and the finishing touch—burying it in clear acrylic lacquer deep enough to prevent sanding through with 600 grit, then polishing the surface to a glass-like smoothness. Sanding through the clear and abrading the candy color from the flakes meant exposing silver foil and spelled disaster.

07 1930s Ford coupe body with fresh metallic purple paint drying in booth
PPG’s Paul Stoll used a Walcom Fan Jet to blow air over the waterborne Lilac base color, speeding up the drying process and making the painting quicker.

The first metalflake job undertaken in the Midwest was in early 1961 at the Star Kustom Shop in Wichita, Kansas, by Darryl Starbird for Ed Pogue of Enid, Oklahoma. Starbird spotted an advertisement for metalflake in the March 1961 issue of Hot Rod and asked Pogue if he’d like to try it on his 1953 Ford Victoria Starbird was customizing.

08 Close up of metallic purple flake finish on 1930s Ford coupe body
Doug and Paul are hanging the doors, then masking inside the doorjambs to prevent overspray on the Lilac base color from layering exterior coats of metalflake.

In the early ’60s, DIY custom painters in home garages experimenting with glitter used for arts and crafts discovered Henry Rauchmann’s 1934 invention of Mylar glitter, which was melted and dissolved in acrylic lacquer thinners. In the late 1960s, Metalflake Corporation’s search for plastic flakes that would eliminate airborne aluminum particles and wouldn’t dissolve in thinner led to the production of special solvent-resistant polyester flakes. Though impervious to acrylic lacquer thinners, the polyester flakes typically were not UV coated, and the reflective chrome-like finish on the flakes would fade into white plastic after prolonged exposure to direct sunlight.

09 1930s Ford coupe door with fresh metallic purple flake paint drying process
With the Lilac base color dried on the doorjambs, Doug closed the doors and moved onto shooting hard-to-reach areas first to ensure good coverage.

The evolution of the metalflake brand name, in some respects, mirrors Bayer Aspirin’s transition from a proprietary brand to a lowercase generic name. By 2025, most flakes are made from UV-resistant thermoplastic polymer resins that can withstand high temperatures and are typically called metalflake in conversation. Just as the shift from aluminum foil flakes to thermoplastic polymer resin flakes marks a transition, so was the evolution of “carrier” clears.

10 Fully painted 1930s Ford coupe body metallic purple flake ready for assembly
Notice the wide vertical fan on Doug’s gun. The trick to avoiding runs with good coverage is to overlap the spray and move at a steady, brisk pace.

In Hot Rod’s Feb. ’61 metalflake article, it mentioned that clear acrylic lacquer was used on two of the cars, “but regular lacquer is easier and faster to use,” with regular meaning clear nitrocellulose lacquer. This was an incorrect prediction because clear acrylic lacquer became the preferred choice throughout the 1960s into the 1990s. Automotive paint manufacturers warned on a can of clear acrylic lacquer not to apply too many coats. That rule was often ignored, and it took a long time for the major paint manufacturers to recognize the needs of custom painters and address them.

11 1934 Ford sedan rear body freshly painted metallic purple flake in spray booth
PPG’s waterborne Lilac base color shifted from a wet, full-gloss finish when sprayed and dried to a very lightly textured semigloss surface once completely dry.

For custom bike painters spraying clear acrylic lacquer as a topcoat was problematic because spilling gasoline shriveled the clear paint around the filler neck. From Street Chopper magazine fame, the name Paint by Molly comes to mind. Rollin “Molly” Sanders was known for applying fuel-proof high-build epoxy metalflake jobs with trendsetting candy-colored scroll graphics. Other fuel-proofing experiments included mixing Centari acrylic enamel with clear added with dryer and a urethane cross-linker catalyst, or later, trying Imron clear urethane that wouldn’t react to gasoline spills, but brake fluid caused it to shrivel. In Canada, Endura-Clear, a two-component highly cross-linked, high-performance polyurethane, worked perfectly as a metalflake carrier and topcoat—plus, freezing-catalyzed Endura saved it for another day. PPG produced an all-time favorite clear that held the crown for years before being discontinued: PPG Delglo DAU 82. It could topcoat over anything and was easy to cut and buff.

12 Arrowhead Chemical Micro Medium Sparkle purple metalflake jar for classic car paint
To complete the job from start to finish, requiring the use of 10 8-ounce plastic bottles of genuine metalflake medium sparkle Micro 1.

There are two main reasons why an automotive paint manufacturer reformulates paint. The first is to address environmental concerns by striving to lower VOC (volatile organic content) emissions, and the second is to increase durability to withstand the test of time better. We visited Squeeg’s Kustoms to give MR readers a firsthand look at how a 21st century, state-of-the-art metalflake job is done, preserving every bit of 1960s nostalgia. Thanks to modern materials, it will endure the ravages of time. MR

Check out this story in our digital edition here.

13 Mixing PPG paint and purple metalflake for custom 1934 Ford hot rod finish
From PPG’s Vibrance Collection (PN VWM5556), a waterborne midcoat clear for use with Envirobase pours out like milk and dries crystal clear. It is used as a carrier for metalflake or as a protective barrier for graphics.
14 Stirring metallic purple flake in PPG paint cup for custom hot rod application
Metalflake remains suspended in PPG’s VWM5556 waterborne midcoat clear and doesn’t need marbles in the cup to keep the metalflake agitated while spraying.
15 1934 Ford sedan hot rod masked and painted metallic purple flake in booth
It took eight coats of metalflake mixed in PPG’s Vibrance Collection VWM5556 waterborne midcoat clear to cover the 51594 Lilac base color completely.
16 1934 Ford hot rod body and panels painted metallic purple flake restoration shop
Doug sprayed PPG’s Vibrance Collection Ditzler (PN VC 5700) high-build urethane custom clear, five coats at a time, to bury the metalflake deep enough to wet sand with 320-grit and not break through.
17 1934 Ford hot rod masked for two tone or graphic paint over metallic purple base
Doug sprayed PPG’s Vibrance Collection Ditzler (PN VC 5700) high-build urethane custom clear, five coats at a time, to bury the metalflake deep enough to wet sand with 320-grit and not break through.
18 Classic Ford hot rod body panels drying after metallic purple flake paint application
After fogging the graphics in candy purple, followed by an inner coat of Ditzler clear (PN VC 5700), Doug disassembled the body, hung the parts individually, and then “slicked” the final coats in PPG Concept high-build urethane clear.
19 Rear view of 1934 Ford sedan hot rod with deep metallic purple flake paint
There are no runs in the paint anywhere, which is good because a run in the VWM5556 waterborne midcoat clear carrying metalflake could cause the metalflake to pile up. Similarly, a run in the Ditzler VC 5700 clear or Concept DCU 2021 clear on the louvers would be very difficult to fix.

Sources

English Color and Supply
englishcolor.com

Kolor Koalition
kolorkoalition.com

PPG Vibrance Collection
ppg.com

Squeeg’s Kustoms
(480) 834-0324
squeegskustoms.com

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