The man escaped the store by using his machete to smash through the doors.
The owner of the store was not harmed during the armed robbery.
Police have released a description of the man who is believed to be around 5 ft 2, wearing a black tracksuit with a black hoodie over the top.
A second male was also present at the time of the robbery but remained outside the store.
The second person was wearing a grey hoodie.
Police are still on the lookout for the man and are asking anyone with information pertaining to the robbery to contact police on 131 444 or Crime Stoppers on 1800 333 000.
Witnesses can also jump online and submit an anonymous report.
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