No milling required. Instead, they should include the 9/16 bit. I think the curve should be a holdover from an earlier version of this set. Therefore 4 stars. You need more than you think. In the end I used 21 double planks (ie 41 last single planks) of 68 cm, perhaps a few less could have been made. Each last vestibule (after cutting out the "double") results in a mesh size of about 17 mm. And you're bound to screw something up. So do extra. Be patient with the setup, don't rush to center theβ¦