Most chisels and other cutting tools are made of tempered steel. If the steel gets too hot and turns bluish black, it’s overheated and won’t hold an edge very long. To avoid ruining the edge of a tool ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? The humble bench grinder is a staple of the handy-person’s home shop, largely due to ...