A total of 78 knives have been handed into police since the launch of a blade amnesty two weeks ago.
The month-long crackdown is part of Operation Limit which is being run by Northants Police and also forms part of national Save A Life campaign.
Once collected, all the knives from across the country will be melted down and moulded into an angel statue in Trafalgar Square to remember those who have lost their lives to knife crime.
A spokesman for Northants Police said: “There is still time for members of the public to surrender knives safely and anonymously, and in turn remove the risk of these weapons being used to hurt people.
“Knifes can be dropped into a drop bin, or a scheduled appointment can be made by calling 101 and arranging a visit from a police officer who will take the knife away.”
There are no drop bins in South Northants this week but people are advised to call 101 if they have a knife to hand in.