The Jackson Custom Shop has turned out world-class custom guitars ranging from the fine to the fantastic ever since the Jackson name was first affixed to a headstock in 1980. The reason for this impressive longevity is simple: Jackson was a custom shop since the very beginning. Every Jackson guitar was an original, high-performing custom instrument.   Whereas some production guitar-makers open their own custom shops after reaching a certain age or level of success, Jackson existed from its early days as nothing but a custom shop, building distinctive and meticulously crafted instruments for a very exacting clientele. No design was too crazy, and no idea too far-fetched—if someone conceived it, Jackson’s talented, imaginative and occasionally demented craftsmen built it. This early emphasis on originality and even outlandish one-off instruments proved enormously influential for Jackson’s most famous and oft-copied body shapes.