Modern Rodding Tech
InTheGarageMedia.com
By Gerry Burger Photography BY THE AUTHOR
Modifying and repairing die-cast pieces can be accomplished after copper plating the piece. Then solder in place copper filler pieces to fill the voids.
Ornamental Bullnose title
Ornamental Bullnose title
Modifying and repairing die-cast pieces can be accomplished after copper plating the piece. Then solder in place copper filler pieces to fill the voids.
How to Customize Die-Cast Trim Pieces
By Gerry Burger Photography BY THE AUTHOR
B

uilding a hot rod of any era is a stream of choices—some big, some small—but they all contribute to the finished package. One thing we learned early on was to pick a theme and make every decision fit that style. My latest project is a 1936 Ford phaeton being built as an early ’50s hot rod/custom. Many cars of that era blurred the lines between rod and custom with performance under the hood and some custom touches and paint on the outside. That is the very theme of our 1936, with a built Flattie underhood and a conservative custom approach on the outside.

We’ve recently been doing the bodywork and while stacking parts on the shelf (all neatly marked for the memory impaired) we came across the original grille ornament. The ornament was in overall good condition with the V-8 emblem intact. However, two holes drilled in the piece told us a greyhound had once adorned the piece. While greyhound ornaments are cool, in keeping with the theme of the car, we thought a simple bullnose ornament from Speedway Motors would be a quick-and-easy solution. But then we began to think about making our own bullnose piece, but with a custom twist. We wondered about grinding down the finned portion of the ornament to a lower profile giving us a “semi-bullnose” look.

Some marking with a Sharpie seemed to indicate we could trim the piece to eliminate the two holes and achieve our desired lower profile. A die grinder and cut-off wheel took off most of the die-cast piece and we finished shaping with files and sandpaper. Since the hood ornament is die-cast, removing metal is easy—so easy you must work carefully not to remove too much material. We sanded the ornament down to a 400-grit finish and spent some time viewing it from various angles. The piece flowed nicely but we now had the problem of filling the resulting openings caused by removing the V-8 emblem and removing the top of the fin.

Working with die-cast material is difficult, but working with copper is relatively straight-forward. So, the trick is to convert this die-cast piece into a copper piece. We spoke to our friends at Advanced Plating earlier to make sure we could send the piece to them for copper plating, then have it returned to us where we would solder copper filler pieces in place before returning it to Advanced Plating for more copper and final chrome plating. It should be mentioned that Advanced Plating is fully equipped to do the entire filling process and this type of repair and modification can be done on virtually any die-cast piece. We opted to do this at home for two reasons: One, we enjoy doing these little projects that make a big difference; two, we’re cheap and wanted to save a little money.

And so, satisfied with the final shape it was carefully boxed up and shipped to Advanced Plating for stripping of the remaining original chrome plating followed by copper plating. Our piece fell into the production line and a couple of months later the grille ornament returned, glistening in all its copper glory. Remember to plan ahead for chrome plating as all good chrome shops have a backlog of parts to plate. Generally plan on at least a couple months to get chrome done and a simple call to the plating shop will give you an idea of how long it may take to complete your job. In this drive-thru window, overnight-shipping world, there are still some things that just take time.

Finding copper material to fill the voids proved to be fairly simple. Since the piece is basically hollow, a simple piece of 1/8-inch copper tubing was gently shaped to fill the long void on top of the ornament. This involved bending it by hand and then squeezing it in a vise to slightly flatten the copper tube. The tubing was fit from the underside to the ornament and then we soldered one end in place; think of this as a “tack solder,” much like a tack weld. This allowed us to gently tap the copper tube up into the void. The operative word here is GENTLE; die-cast is not known for its strength so you must be careful not to damage the piece. With the tubing fit to the opening it was soldered from the top to fill the seams between the tubing and the hood ornament. Allow the solder to build up above the piece. Since the lead solder is very easy to work, fill it high and then carefully file it down to the proper profile. Once the filing has formed the initial shape, finish the piece with a soft sanding block and sandpaper. We first sanded with 320-grit and finished the work with 400-grit.

The front opening is a bit irregular but using the same tubing technique (this time we used 1/4-inch tube) we shaped a filler piece and soldered it in place followed by more of the filing and sanding to smooth the piece. Satisfied with the shape and finish of the piece it was returned to Advanced Plating for final finish, copper, and chrome plating. When we received the piece back in finished chrome plating, we were more than pleased. The plating was impeccable but beyond that we were pleased with the overall shape of the piece. It will be one of those things that most people may never notice, but such subtle changes are what make a car special and we are pleased knowing our hood ornament is one of one.

1: This is our original 1936 Ford hood ornament
1. This is our original 1936 Ford hood ornament. It once held a V-8 emblem and a greyhound but we wanted a cleaner look.
2: While a true bullnose eliminates the Ford oval, we opted to keep the oval emblem, making our one-off piece a “semi-bullnose.”
2. While a true bullnose eliminates the Ford oval, we opted to keep the oval emblem, making our one-off piece a “semi-bullnose.”
3: We drew a black line on the piece to help visualize what it would look like after some careful cutting
3. We drew a black line on the piece to help visualize what it would look like after some careful cutting.
4: A die grinder and cut-off wheel made quick work of removing the unwanted portion of the fin
4. A die grinder and cut-off wheel made quick work of removing the unwanted portion of the fin. We cut above the line and carefully worked with files to remove the rest of the material.
5: After careful filing and then sanding with a soft sanding block we achieved this final shape
5. After careful filing and then sanding with a soft sanding block we achieved this final shape. It’s cleaner than the original shape but just a bit more ornate than a true bullnose piece.
6: After a bit of quick sanding we were done with that hole and the piece was sent off to Advanced Plating for finish work and copper plating
6. The opening above the oval once held the original V-8 emblem. After a bit of quick sanding we were done with that hole and the piece was sent off to Advanced Plating for finish work and copper plating.
7: Here’s the piece after the metal masters at Advanced Plating worked the piece smooth to remove pitting and then applied the copper plating
7. Here’s the piece after the metal masters at Advanced Plating worked the piece smooth to remove pitting and then applied the copper plating.
8: Our first task was to fill the long rectangular opening on top of the hood ornament
8. Our first task was to fill the long rectangular opening on top of the hood ornament.
9: We decided to use small copper tubing (1/8 and 1/4 inch) for filler material
9. We decided to use small copper tubing (1/8 and 1/4 inch) for filler material. It is easy to work with and filled the void nicely.
10: After arching a piece of ¼-inch copper tubing to fit the profile we checked it for fit
10. After arching a piece of ¼-inch copper tubing to fit the profile we checked it for fit. This piece will be installed from the underside of the hood ornament.
11: After cleaning the copper tube with a piece of Scotch-Brite we coated the area to be soldered with flux
11. After cleaning the copper tube with a piece of Scotch-Brite we coated the area to be soldered with flux. It is imperative that you clean copper prior to soldering.
12: A propane torch was used to solder one end of the tubing in place
12. A propane torch was used to solder one end of the tubing in place. This “tack solder” will allow us to do the final forming of the tubing.
13: Build up the solder so you have enough filler material to file down
13. Be sure the solder has “run” around the tube. Then build up the solder so you have enough filler material to file down.
14: With the tubing soldered on one end we gently tapped the tubing into place
14. With the tubing soldered on one end we gently tapped the tubing into place. Gently is the key word here, and we used the smallest hammer we own to do the work.
15: Lead solder works very easily so a file will quickly dress the solder down to the final contour
15. Lead solder works very easily so a file will quickly dress the solder down to the final contour.
16: The final finish is achieved with a soft sanding block and 320-grit sandpaper followed by 400-grit
16. The final finish is achieved with a soft sanding block and 320-grit sandpaper followed by 400-grit.
17: Next, we turned our attention to the irregular-shaped opening in the front of the piece
17. Next, we turned our attention to the irregular-shaped opening in the front of the piece.
18: We flattened a piece of 1/4-inch copper tubing in the vise before gently tapping it into place from the back side of the ornament
18. We flattened a piece of 1/4-inch copper tubing in the vise before gently tapping it into place from the back side of the ornament.
19: Here you can see the tubing has nicely filled the opening
19. Here you can see the tubing has nicely filled the opening. Also note the filler piece has been sanded clean to prepare for solder.
20: Two small clamps hold the piece in place and we have applied the flux to prepare for the solder
20. Two small clamps hold the piece in place and we have applied the flux to prepare for the solder. The clamps are removed as soldering progresses.
21: Once again, the propane torch is used for the soldering process
21. Once again, the propane torch is used for the soldering process. Minimize the heated area and do not overheat the piece. Remember, under that copper is an 84-year-old die-cast piece.
22: Filing followed by careful sanding gave us a perfect radius and shape
22. We used the same technique to finish this filler piece. Filing followed by careful sanding gave us a perfect radius and shape. Now the piece was ready to be sent back to Advanced Plating for the final chrome plating process.
23: It should be mentioned that Speedway Motors sells a very nice reproduction of the original ornament that would simply bolt in place
23. It should be mentioned that Speedway Motors sells a very nice reproduction of the original ornament that would simply bolt in place.
24: Here is the final piece; the team at Advanced Plating did a flawless job
24. Here is the final piece; the team at Advanced Plating did a flawless job. We opted to replace the blue Ford emblem with a new red Ford oval as a final custom touch. In the end we were extremely pleased with this project.
 SOURCES
Advanced Plating
(615) 227-6900
advancedplating.com

Speedway Motors
(800) 979-0122
www.speedwaymotors.com

Modern Rodding
VOLUME 2 • ISSUE 4 • 2021