Instead of getting these bars waterjet cut, this is the method I use to chop them up into usable sizes. It’s fairly simple and straightforward, but it’s the best I’ve found after trying many many different ways. Waterjetting these can be tricky, you have to clamp it down to the table very well and you have to ensure that the stream doesn’t break out the side of the bar otherwise the whole thing will start to curl.
From here it goes on to surface grinding, then machining, then polishing, then heat treating, then polishing again, then stonewashing, then assembly, then sharpening. Knifemaking is easy, right? Hahaha.