A new hacksaw blade is like $2 at the most but a used one works well for shedding out a horse. I use it because it will curve when going over the hips and such. Just pinch each end with your thumb and forefinger and you're in business.
It's definitely working, but I would want to see the underside, too. I like being resourceful and saving myself from spending unesessary money when I can avoid it by finding an alternative.
My Easy Block works just the same. Only disadvantage is that they wear down (but, so does a curry comb)