Safety Kit (AR-Base Compatible) is a simple printed add-on designed to improve speargun safety by adding a protective/secure interface that works with AR-Base trigger systems and wood speargun that you can fix under the stock secure by 2 screws2 design available Manufacturing settingsPrinter & materialsPrinter: FDM 3D printer recommendedMaterial:PETG (best general choice for strength + toughness)PLA (can work, but less impact resistant)Nozzle: 0.4 mmLayer height: 0.2 mm2) Suggested settingsWall/perimeters: 4+Top/bottom layers: 5–6Infill: 30–50% (gyroid or grid)Orientation: print so the load direction goes through the strongest layers (no “snap” forces across layer lines)Supports: only if needed for overhangs (try to keep the part “clean” without supports on critical surfaces)3) Fit + tolerance (important)Do a test fit on the AR-Base mounting points before final assembly.If it’s tight: sand lightly or reprint with +0.2 to +0.4 mm clearance on contact surfaces.If it’s loose: increase walls/infill or scale small areas slightly.4) Post-processingRemove supports carefully.Lightly sand any contact faces.If the design has hinges/clips: test flex by hand before installing.5) Safety noteA printed safety component should be treated as assistive, not as a substitute for proper speargun safety procedures. Inspect for cracks after first use and periodically.