I hav8e passed most of m shop to my grandson, but I guess I could make an extra. I usually make them from repurposed steel,
which is from a file, lawnmower blade, bearing cup or some other high carbon steel source.
For just this one time, I am probably bidding too low, but would make you one for say, $40 plus shipping..that would be for up to a 5" blade.
Because I am actually retired now, If I were to go into making them regularly, It probably would be about $10 more.