Early last year, Nikki Parkinson, 38, began sending threatening and racially abusive text messages to an Aboriginal woman he had met at a support group.
During the same period he bashed his partner one night after she refused to let him borrow her car to steal alcohol.
He threw a wheelie bin at her, swung a homemade bat with bolts and screws at her and poured turpentine in her eyes before threatening to set her on fire.
On Wednesday in the ACT Supreme Court, he was sentenced for both incidents.
Justice Hilary Penfold said she believed the text messages were intended to be offensive but not racially motivated, despite Parkinson's interest in white supremacy.
She found Parkinson's bipolar and alcohol misuse had contributed to his violence.