Minor technicality, but the Edelstaal tooling system was developed for the Machinex 5 lathe.?? the only catalog I have seen this tooling in is the Machinex 5 accessories.? I purchased an unused Machinex lathe with a set of tooling in a fitted plastic box plus extra bits in M-2 and T-15 high speed steel plus a few carbide inserts.? The instructions for the tools say to sharpen the front clearance of the bit and lightly grind the side clearance to ensure it is sharp.? It takes a few minutes to sharpen a bit the first time, and less to touch it up.? They seem to do a good job of cutting if properly sharpened.? I have not tried the cutoff tool, the fly cutter, or the boring bar.? If there is any interest, I can post a copy of the instructions.