Peter Hall targeted cabbie David Bow-ditch as he returned to his taxi after buying chips from a seafront café.
According to the Midweek Herald, he demanded he hand over all his cash, but Mr Bowditch re-fused and pushed him away before the two men grappled.
Hall stabbed him with a wooden-handled knife and left him with a three- centimetre deep wound under his arm which narrowly missed vital organs.
The robber was wearing a scarf which covered his face and a hat pulled down over his face to try to hide his identity from the victim and CCTV which covered the area.
Hall was desperate for money to buy drugs and had been hanging around a nearby cashpoint before he saw Mr Bowditch pull up at the chip shop.
Hall, aged 40, of Hawkwell Caravan Site, Axminster, admitted robbery and having a knife and was jailed for five years by Judge Geoffrey Mercer, QC, at Exeter Crown Court.
He told him: “You armed yourself with a knife and went to rob a taxi driver. The knife was produced and you stabbed him under the armpit, causing a wound which could have been much more serious than it was.”
Brian Fitzherbert, prosecuting, said: “As the taxi driver opened the car door, he found Hall right up in his face telling him to hand over his money. Mr Bowditch was not going to stand for that and pushed him away saying ‘no chance’.
“There was a scuffle and, unknown to Mr Bowditch, Hall had a knife and stabbed him under the armpit.
“Mr Bowditch needed treatment for a wound in his side, but after making a statement to police he told them he wanted to get straight back to work.”
Paul Grumbar, defending, said Hall had been a highly successful baker who made award-winning wedding cakes before developing a heroin addiction as a result of accidentally taking the drug at a rave.
He said on the night of the attack he was desperate for money to buy drugs.
He added: “He has now come off all drugs while on remand in prison and his skills as a baker have been put to use in the kitchens.”