MC, looks about right, except the Cascade tubes are hexagons, not squares. There's a series of 0°, 60°, and 120° angled paths, not 45° & 135° like you have in your picture.
The very first "tubed" prototype was made out of acrylic using a 1.0mm (~5/128") cutter. You don't need to cut deeper than about 1/8". Most endmills we use have around 4 times the cutting shank length as compared to the bit width.
A Cascade cut with a 1/16" end-mill, and everything else being balanced appropriately, would result in something that would perform slightly worse than a White Water.
The present Cascade/SS gets cut with a 1/32" end-mill.
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