compared to a general purpose knife or axe, yes, bloody hard work!

Especially hooked varieties.
If I wanted to make them like modern manufacturers do, then it would be pretty easy as they are either uniform thickness (basically a billhooked shape but with a convex scandi grind

) or at best they have a distal taper (thicker at handle than tip) but no taper across the width of the blade. Getting a blade that size and shape straight is interesting and as I don't do much grinding I have to forge to finished, which may make my life more difficult. Getting the weight distribution right is a matter of working out what the tool is for partly, not all are that front heavy.
To make a Devon pattern for example I start with a bit of bar 1 1/2" x 1/4 or 3/8". The distal taper is put in, which also widens the front portion. Any blade is bent into a curve so that as the bevels are forged in it can straighten to the right shape. With a billhook the straight bit is bent like a banana and the hook end has to be bent a lot further around (looks kinda like a curved J). Bending a flat bar on edge like that is a serious PITA. Then it gets hammered out into a V cross section and the final shape of the hook is tweaked to about right. Then I draw the tang out, which is the easy bit!
Unfortunately, like axes, people think of a billhook as just another tool and don't want to pay the sort of money that they would for a knife of the same size, strain and complexity
I may do a photo tutorial next time I make one.
My normal everyday hook is one based on a 3rd Century hook and doesn't have too much hook on it. The front sin't as wide and weighty as most billhooks which (combined with the shallow hook) means its not as good at coppicing and hedge laying as say a Bristol or Devon, but for snedding and bushcraft it is pretty darn good. Its also not as much of a pain to make as a very hooked blade
