Hi hi, theres a guide to know how many cubis need for refine equipments.
Good luck.
+1 need 0.5 cubi
+2 need 2 cubi
+3 need 5 cubi
+4 need 12.5cubi
+5 need 30 cubi,
+6 needs 65 cubi,
+7 needs 107.5 cubi,
+8 need 202.5 cubi
+9 need 375cubi,
+10 need 685 cubi,
+11 need 1262.5 cubi,
+12 need 2322.5 cubi