It takes a hell lot of time to craft 50 HQ turns ins for the i70 mainhand. This is the rotation i have been using, with HQ base mats, i am able to HQ all 50 turns in every single time. You will need at least 380 CP (with Bouillabaisse food that +40CP). You will also need at least 347 craftmanship and 340 Control for the HQ.
Comfort Zone
Inner Quiet
Steady Hand II
Waste Not II
Hasty Touch
Hasty Touch
Hasty Touch
Hasty Touch
Steady Hand II
Hasty Touch
Hasty Touch
Hasty Touch
Hasty Touch
Basic Touch
Manipulation
Steady Hand
Great STrides
Innovation
Ingenuity II
Byregot's Blessing
Careful Synthesis II
Careful Synthesis II
Careful Synthesis II
Careful Synthesis II