I tought about how to stitch a rope eye semi mechanical and came up with this solution.
After having seen how a automated machine preformes i copyed the movement by hand.
You will need a machine with, at least a 120 needle, a powerful machine, enough space for the rope under the needle and good tread.

Heres a tension test for some sew-in-eye from a slightly bigger rope. Hold up 6183lbs what equals in over 3 tons of breaking force.
Break Testing Spliced Eyes, Sewn Eyes and ...
And here is another from some handstitched rope with 3854lbs +- 1,4 tons
Hand Stitched Eye - Break Test

good enough for me.
But... You have to check your own rope for your applications.
we wont take any responsability for any accidents of anybodys own made rope.