I would suggest that you design in a momentary stop, "for a wet cut, meaning submerged" and the use of a circular saw with a diamond edged blade of a fairly large diameter. This type of steel is quite hard, has been tempered and you want to make your cut quickly and with out heating the area that is receiving the friction created by the cutting activity. When drilling spring steel, I have read that it is best accomplished submerged in a cooling solution. Therefore: it makes sense to keep the cut as cool as possible.
TMF
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The only problem with common sense, is that not very many people have it, or know how or when to use it.