We Give a guide explaining in detail where the Fails rate:
Reinforcement:
*1-6 35% Fail
*7-12 80% Fail
*13-15 92% Fail
*16-20 94.99999993% Fail
Abradant deluxe "5% bonus reinforcement Fail
Equipment Abradant Grade A "10% bonus reinforcement Fail
Enhancement Abradant Once "20% bonus reinforcement Fail

ex:
try making +14 : (92% fail rate + 5% fail rate from deluxe abradant) = 3% chance succes Rate.
tryin made +20 = (94.99999993% fail + 5% fail rate)= absolute Fail. u need miracle+ for this.

Thank you