Square rasps are invaluable for forming angular shapes from round ones – forming a square or arched hole from a drilled one is the classic example.
The 150mm square rasp has a tapered tip and a slender 5mm square section, so it is easy to get started into holes of 7mm or larger. The corners are finely toothed so it will cut right into a corner leaving the smallest possible radius. A popular modification is to grind the teeth off one of the four faces, giving you the option to cut both sides simultaneously or one at a time as you work up to a corner.
Each Workshop Heaven hand stitched rasp begins life as a forged and annealed blank of high carbon tool steel is carefully ground and 'fined' to a smooth surface before being strapped to a soft anvil to have their teeth individually raised or 'stitched' one by one with a special punch and a curved file makers hammer.
The handles are turned from English walnut with brass ferrules to a 200 year old Holtzapffel pattern, individually fitted and set by hand for a comfortable, elegant and secure grip.
- Shoulder to tip: 150mm
- Overall length: 290mm approx
- Face width: 5mm tapering to 3mm at the tip
- Coarseness: 38 teeth per square cm (medium)
In order to keep your rasps clean and free from corrosion we recommend removing any clogging from the surface with a stiff bristled brush and applying a few drops of metalguard ultra liquid corrosion inhibitor after each use. Store your rasps in such a way that they cannot touch or rub against each other.