Hss Horizontal Milling Tooling.

[Paul in OKC]

Well, that cutter would get the job done! There won't be much issue with the slot cutter. As for the inserted mill think of running an end mill on a regular BP type mill. When you run a slot type of cut, and get to the end and run the cutter back to the star. The slot will usually be wider than the cutter, depending on all the usual variables of rigidity in machine and set up. Anyway, it's going to be a bit of a slow go regardless, that's a big slot to cut!