Up for a challenge

Hi William,

Ok for the cylinder dimension, i don't see it, because i use ISO normalization.
So, what mean "n" before the number?

  1. Step 1:

    I put the sketch of the first step

  2. Step 2:

    For the step2:
    Open a new sktech in the middle plan of your volume (face, for me)
    Trace construction lines: a vertical one, and an inclined one at 25° (half of 50°)
    Add a perpendicular line at 1.327 from the sphere center.
    1.327 is obtained by:
    2.044 - (0.045 + (0.032 * 21)) = 1.327

    (my measures are * 10!)