Tools & DIY / Review
Stanley Surform 21-124 Round Hand Rasp Review: A vintage shaping tool for curved cutouts
Review the Stanley Surform 21-124 round hand rasp for curved openings, blade condition and how it compares with later Surform round files.
The vintage Stanley Surform 21-124 is a hand rasp for shaping the inside of a curved opening. The round perforated blade is the reason to choose it over a flat file. Stanley still documents a related round Surform file under a newer number. This review covers the older marked 21-124 shown in the photo.
Pick it for the shape of the job
A round blade makes sense for concave areas a flat tool cannot reach. This is a rough shaping tool. Leave room for a separate finishing pass if the edge will be seen or touched. Decide whether the round profile matches the recess you need to shape before choosing it over a half-round rasp.
Buying one used
Check the handle and the blade for corrosion, flattened teeth and loose fittings. Verify any replacement blade against the older tool’s attachment design. A good example can be useful for occasional shaping. If the blade is worn and the correct replacement is hard to find, compare the cost of a newer file.
How we evaluated it
This editorial rating uses the manufacturer’s product documentation and assesses fit for the stated use. It is based on documented features and tradeoffs. We did not test this unit hands-on. See our editorial policy for how we score products.
What works well
- Round blade reaches concave areas
- Simple hand operation
What to consider
- Coarse tool needs a finishing pass
- Verify replacement blade fit on older handles
At a glance
- Legacy marking
- 21-124
- Blade profile
- Round Surform
- Use
- Rough shaping on compatible materials
