JJ Rebreather head protector

thingiverse

After a dive, the JJ rebreather's head needs drying out. Frustration grew as no easy method existed to stand it on a flat surface without risking damage to the O-rings. Transporting the head separately from the rebreather required a full cover, but those available were expensive and sat directly on the O-rings, which wasn't ideal. To solve this problem, a head stand was designed. The head simply clips into the lower part, allowing it to dry safely. It is secured above the upper O-rings on the upper part of the stand, so no O-rings touch anything. Since PLA is softer than Delrin, used in the head's construction, scratching shouldn't be a concern. Testing occurred on a rough sea during a liveaboard trip in the Red Sea; the stand remained upright well. A small clip on the left side allows the HUD to be safely tucked away. The upper part slides onto latches on the lower part and is secured by the JJ head retainer spring. To assemble, place the upper part over the lower section, 10mm behind it when viewed from the head end, then push down, depressing the JJ spring. Next, move forward until the JJ spring pops up, securing everything in place. Two parts were designed to fit within a printer's volume, although this stand is quite large and might be too big for smaller 3D printers. Note that this design is intended for the DiveCAN rebreather only, not its earlier version with a different-sized head. A license note also applies: feel free to print one for personal use, but for commercial purposes, please contact the original creator.