I went shopping online for a metal file with which to increase the gap of the hook on the support strap I use for my classical guitar. The hook engages with the sound hole of the instrument, and is too narrow on the strap I recently received as it comes from the factory.
I encountered on Amazon a “Stanley 21-106 8-Inch Mill Bastard File.” I needed to know if it was thin enough for my needs. One-hundred-forty-eight people have reviewed this 8-dollar tool on Amazon.
“Spencer in Seattle” went extra distance in his review by including useful information about tooth patterns. “Bastardd” once, shame on you for the typo. “Bastardd” twice, shame on me — maybe it’s a legitimate alternate spelling.
Files come in different tooth patterns, which fall into these groups: rough, middle, bastardd [sic], second cut, smooth, and dead smooth. This one is the bastardd [sic] file, which puts it right in the middle of the pack and means you can do most things with it.