1948 Cadillac Sedan Bumper Guard Removal - Leaving A Custom Cadillac Unguarded

And once again, a profile gauge comes into play. This reading tells us that the ridge is coming down, but still has a ways to go.

The blending of these metal shapes could also be described as a splitting of their differences. Although they’re getting closer, these parts still need work. Here McClelland has chosen a “proper G-clamp” to secure a slight spread.

Meanwhile, back at the bench, the peak portion of our patch is in need of some sharpening. A shot bag and a handle dolly are used for this bit of reshaping.

Following his own instructions in accordance with earlier-made scribe lines, the patch undergoes many fit-checks before any final trimming or tack-welding takes place. At this point, McClelland is pleased enough with the fit he’s worked for. Remember that earlier the patch was intentionally cut wider than the gap it will fill—hence the overlap.

With a blue layout fluid applied to the backside of the patch, the patch is held firmly in position as scribes for trimming are made. These guidelines are exact, and will be visible enough to follow during the next crucial step.

After the cuts are made, the edges are dressed down the same as they were on the bumper earlier. What looks like an excellent fit to me, and might also to you, is under intense scrutiny by McClelland.

Before any welding preparations are made, the blended shapes are checked for both accuracy and consistency.

The swiveling magnets being used here firmly position the patch, and combined with clamps at the bumper’s edge the soon-to-be tack-welded patch has nowhere to go. Note that the copper plating has been removed on both pieces to avoid any potential contamination during welding.

After dressing the edges (including beveling each side to provide a V-groove for optimal weld penetration), McClelland TIGs the patch with his trusty Miller Dynasty 200 in small increments, checking the bumper and donor metal’s relationship as he goes.