This bevel is subsequently refined by honing until a satisfactorily sharp edge is created.
The purpose of the sharpening jig is to hold the blade or tool at the desired angle while grinding or honing the bevel.
Fundamentally, all jigs are similar in that they allow the user to clamp the blade or tool in some way.
The jig then has some means of referencing the clamped blade to the grinding or honing apparatus so that the bevel angle is maintained.
These types of jigs are usually used with a sharpening stone or plate, such as a waterstone, oilstone or diamond abrasive surface.