Body Repair Putty: what Claude and GPT would buy
Two AI models chose on their own, with no web access. Nobody tested these products: this is what each one says, and how to check it.
They disagree: Claude chooses Evercoat and GPT chooses Bondo
In Automotive, Claude and GPT choose the same brand in 60 of 112 categories.
Claude Opus 5.5 · October 27, 2026
Evercoat Rage Gold (line)
It is a premium lightweight polyester filler that spreads smoothly, sands easily and has fewer pinholes than budget fillers.
Not for: Rust-through holes or large gaps that need fiberglass-reinforced filler, or final pinhole touch-ups where a glazing putty is better.
GPT 6.1 Sol · November 11, 2026
Bondo Glazing & Spot Putty (line)
Easy to apply and sand for smoothing minor scratches, pinholes, and small surface imperfections before priming and painting.
Not for: Deep dents, structural repairs, or large areas requiring body filler.
Which one fits you
budget DIY dent filling
Bondo Lightweight Body Filler (line)
It is easy to find and forgiving, and it is fine for small dents on a first project.
Not for: Anyone who wants the smoothest, lowest-pinhole finish with less glazing work.
pinholes and fine scratches over filler
Bondo Glazing & Spot Putty (line)
This one-part tube putty is handy for filling small pinholes and sand scratches before primer.
Not for: Filling dents or any layer thicker than a skim coat, since it shrinks as it dries.
rust holes and fiberglass repair
Bondo-Glass (line)
Its fiberglass reinforcement bridges small holes and adds strength where plain filler would crack.
Not for: Final skim coats, since it sands coarse and needs a finer filler on top.
Check before you buy
Where to find Evercoat Rage Gold
- O'Reilly Auto Parts
- Eastwood
- Summit Racing
Shops seen in search results on November 5, 2026. A shop missing here may sell it too. Nothing was checked by a person.
Brands that matter
- Evercoat: Pro-grade fillers and glazes, including the Rage line.
- Bondo: Widely available DIY fillers, reinforced fillers and spot putty.
- U-POL: Body shop brand with fillers and glazes for professional use.
- 3M: Fillers and glazing putties within its collision repair range.
What to avoid
- Mixing filler on cardboard, which absorbs resin and can contaminate the mix.
- Stirring the hardener in vigorously, which traps air and causes pinholes.
- Spreading filler over rust you have not removed.
- Using one-part spot putty to fill dents.
Questions
Is body filler the same as glazing putty?
No. Body filler builds and shapes the repair. Glazing putty is a thin final coat for pinholes and sanding scratches before primer.