Spring loaded plastic bag holder AID device

thingiverse

This approach is designed to enable individuals with reduced hand function to hold a plastic bag in a discreet manner. The mechanism is meant to be concealed under the sleeve, releasing when bumped against the hip. It's essential to note that this design is not intended for heavy bags. There are two versions of this device: one featuring a fully printed mechanism and another with added reinforcement. Materials required: * Leather * Filament (PLA or ABS) or nylon or aluminum for the slider * Adhesives (Cyanoacrylate, epoxy, contact glue) * M3 hexbolt * Plaster cast of a hand * Springs attached to the slider at the two knobs The button is printable (knapp111.stl). To print, use a stiff material but consider using a metal screw. An M3 bolt and buttonhead.stl are also required. Grind the bolt head to create space like in the provided picture (blue). Cut it to the correct height. Thread the hole in the buttonhead with an M3 tap. Adjust the travel by turning the bolt, ensuring it doesn't extend too far. The button is calibrated for optimal pressure release using soft material slices (EVAsot, approximately 30 shore hardness). * Slider: Print the plastic slider in a strong, non-brittle material like nylon. Since I didn't have access to nylon at the time, I had to mill it from aluminum. * The hook: Print this part in PLA or ABS and glue it to the slider using Cyanoacrylate. * Brace: For the brace, use wet-formed leather (similar to a leather knife sheath). You'll need a plaster cast of a hand for a perfect fit. Soak the leather overnight. Stamp the leather over the cast (smooth side facing in), aiming for the opening to avoid damaging the parts you'll use. Stretch it as far as possible around the cast and stamp the other end near where you started. Secure with bandage or something, then let it dry in a warm place for several days. Remove the stamps and take out the cast. Trim the ends. Attach the mechanism using epoxy and cover it with horse leather or a stretchy material of choice using contact glue. Add Velcro for fastening and a shoelace hook for easy detachment. Printer Settings: * Brand: Ultimaker * Printer Model: Ultimaker Original * Rafts: No * Supports: No * Infill: 30% or more * Notes: Print with 3 shells at 0.4 nozzle