Hi folks... Wondering if I could get some opinions on something. I have a Shop Fox W-1857 8 inch jointer with 4 straight knives, 8"x3/4"x1/8". The machine has been discontinued and I can't find a set of knives specifically designated for that machine. However, there are knives with the same specs available for other jointers from other manufacturers. Logic is telling me that if the knives are the same size, they should work for any machine regardless of manufacturer. Is my logic flawed? Am I missing something?

Also, I can only find that size sold as a set of three so, if this works out, my thought was to buy four sets (12 knives) giving me three full sets of four knives. What do you think?

Thanks!