BO6 Zombies, Rare Gobblegum Set. Ive spent the last few weeks building all Gobblegum sets from BO6 Zombies. As a huge Zombies fan this has both been enjoyable and a challenge. this is the Rare set, the file is a large one with a number of plates which contain all gobblegums, each with a round version and a flat bottom version. Print them all or choose your favourite. Of course this is a Niche design but Call of Duty zombies fans will love these. 0.2 layer height. 5% infill, round versions do require supports, set top z to 0.3