Northamptonshire Second XI secured the remaining five wickets in just over 20 overs to start Day Two with a flurry, before Cronie and Thurston both secured centuries to get the chase underway.
James Sales made the innings his own by adding four wickets to his two from Day One, meaning his bowling figures 6/81 from 17.2 overs provided superb reading.
Gorvin was caught by Buck off the bowling of Sales before Bevan’s 156 run stint was ended by the same combination.
Smith was then caught by Curran, again off the bowling of Sales, before Gus Miller added a further contribution by bowling Lewis.
Sales finished of a fantastic performance by bowling Horton to put a stop to his quickfire half-century and end Glamorgan’s innings at 413.
James Cronie and Charlie Thurston both put on a superb batting display as the pair reached 168 between them. Cronie reached an impressive century in just 161 balls before he was trapped lbw by Gorvin.
Charlie Thurston continued where Cronie left off, reaching his own century in 208 balls – sharing five partners in the process as Glamorgan did manage to take wickets through Northamptonshire’s middle order.
Thurston and Gouldstone ended the day with Northamptonshire 248/6.