Magic staff 3/4
When upgrading the staff and you hit 3/4 and 4/4 the staff is creating a poor build not a excellent. So anything created at this point is the same as a 1/4 staff.
final quality is the lower of your mastery and the technology of the town you are crafting in.
I have 4/4 short bows, but the town I craft in only has 2/4 tech points, so I can only make quality 2/4 short bows.