
- Size
- No. 4 smoother
- Iron
- A2 tool steel, thick section
- Bed angle
- 45 deg, bevel down
- Warranty
- Limited lifetime, blades excluded
Stanley No. 4 Sweetheart Premium Bench Plane
Stanley
The only mass-market bench plane whose maker publishes a lifetime warranty on the casting, fitted with an A2 iron thick enough not to chatter. Read the warranty carefully though: it excludes blades.
Cost per decade
$74.62
Horizon · tier A
30 years — Lifetime warranty, cited
Stanley publishes a limited lifetime warranty on hand tools against material and workmanship defects. Note it excludes consumables including 'any blade' — the casting is covered, the iron is not. Bailey-pattern irons are a standard size and replacements are widely sold.
Rebuy risk
Low
lifetime warranty, parts listed, resharpenable
- Sole & body
- 8.5
- Iron & edge
- 8.5
- Adjustment
- 8.5
- Out of box
- 7.5
- Parts & repair
- 9.0
- Value
- 6.5
What it gets right
- Casting is covered by Stanley's published limited lifetime warranty
- Thick A2 iron resists chatter without the packing-out most budget planes need
- Bailey-pattern parts, so aftermarket irons and chipbreakers drop straight in
- Adjustment holds through a work session rather than wandering
What it costs you
- Costs roughly what a genuinely premium plane from a small maker costs
- A2 is slower to sharpen back than the O1 on older Stanleys
- Still needs the back of the iron lapped and honed before first use
Skip this if…
…you already own a serviceable vintage Bailey. Fitting it with a good aftermarket iron costs a fraction of this and gets you to the same place.
We earn nothing on this one
The best No. 4 you can buy in North America is a Lie-Nielsen, and it is not sold on Amazon, so we earn nothing on it. They publish no formal warranty we could find, but they maintain a full replacement-blade and parts catalog, which for a lifetime tool is arguably the better signal. Buy direct from Lie-Nielsen Toolworks.
Price as of Jul 24, 2026. Prices move; Amazon's is the one that counts.
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