I definately would NOT recommend doing a cut and shut on a blade disc!
I've personally seen the results of what a spining disc of metal can do when it seperates from whatever is holding it, and at a lot less revs too. Devastating is an understatement. Your feet, legs, life, and the life of others are one hell of a lot more expensive than a blade disc. Don't forget, it's not just a blade DISC either! Apart from the blades, there are the formed segments in the disc as well that would work extremely well as a cheese grater on steroids!
Four blade discs are out there, second hand too. I've 3 sitting here in amongst my parts, and another two still fitted to Victa Vortex mowers.
