Reducing the size of a rod you want to thread with a die makes it easier to start the die, but the real secret is to add a 30° chamfer to the end of the rod.
Die Blank Size is the Major Diameter less 10% of the Pitch. This is about the same as common bolts.
Quick Change Tool Holder - Lathe Bit Rapid Retractor, 0XA
End Mill Set, 10 pieces 2 & 4 Flute, TiN coated HSS
