How to Sharpen a Chisel DIY
The 25 degree bevel is called the grinding bevel you ll use a bench grinder to renew it The 30 degree bevel is called the honing bevel you ll use a honing stone or sandpaper to create it Grinding goes fast but honing can be slow If your chisel had only one bevel the 30 degree one you d have to hone its entire surface to get a sharp