J-B Weld SteelStik Epoxy Putty Stick Review (2026)
By The DIYPicks Team · Updated July 2026
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- Metal repair
- Gap filling
- Pipe repair
- Rebuild shapes
A hand-mixable steel putty that patches, rebuilds, and fills holes in metal. Where a thin adhesive just runs off a gap, SteelStik packs in, sets in five minutes, and machines like metal, making it the tool for stripped threads and rusted-through repairs.
Pros
- Knead-to-mix stick fills gaps and rebuilds missing metal that liquid glues can't bridge
- Sets in 5 minutes and can be drilled, tapped, ground, and painted after an hour
- 4000 PSI cured strength and 350F rating handle real structural and engine-bay repairs
Cons
- Not for constant water immersion or potable water (use WaterWeld for wet or plumbing jobs)
- 5-minute set means you must shape it fast before it stiffens up
- Rigid cure won't flex, so it can crack on parts that bend or vibrate heavily
Specifications
| Type | Steel-reinforced hand-mixable epoxy putty |
|---|---|
| Set time | Sets in 5 min |
| Full cure | Machinable after 60 min |
| Bonds | Steel, iron, aluminum, most metals plus wood, concrete, fiberglass |
| Strength | 4000 PSI tensile; drill/tap/grind/file/paint |
| Temp range | Up to 350F continuous, 450F intermittent |