About this 3D model

An open source, vacuum-enabled masturbation sleeve for FDM printing. Two materials. Five parts. Fully parametric — one number adapts the entire design to your body. Because privacy and access shouldn't cost €90. ❤️ How it works The TPU inlay protrudes from the front of the PETG shell. The cap screws onto the rear. Inserting the plug creates a vacuum inside that applies gentle pressure and holds everything in place. ❤️ What's included Shell (PETG) — rigid outer housing Cap (PETG) — screw cap with vacuum port Plug (TPU) — vacuum seal Inlay (TPU) — sleeve with soft rounded entry ring Cushion (TPU) — optional air cushion ring ❤️ Pre-rendered STL files included for four sizes: S (35mm) / M (38mm) / L (41mm) / XL (44mm) Measure your girth in mm, divide by 3.14 → pick your size. ❤️ Fully parametric — customise for your exact size The OpenSCAD source file (PRINTABLE-SLEEVE.scad) is included. Open it, enter your measurement as BORE_D, export your custom STL. No CAD skills needed — change one number, done. You can also adjust wall thickness, shell length, and print quality. ❤️ This design is free. If it works for you and you'd like to support the project: ☕ https://buymeacoffee.com/uknawn