Kevin Francis Smith has been sentenced to two-and-half-years detention while his 15-year-old accomplice has been given a two-year youth rehabilitation order under supervision by the Leicester Crown Court yesterday.
The duo had tried to rob a Supamac store on May 30 last year, which was run by Jitu Patel on Grange Drive in Melton, the Leicester Mercury reported.
However Patel stood up to them who were wearing masks and brandishing knives.
It was revealed during the investigation that the knives were large, dangerous and menacing and were waved dangerously close to Patel's face.