Side-Pinned 40-Quarter Dispenser
Created today
Description
What it's for
A fully mechanical, gravity-fed coin magazine tailored for standard U.S. quarters. It stores a full $10 roll vertically and dispenses exactly $1 (four quarters) per cycle into the palm of the hand. The mechanism relies on a two-stage sliding escapement, now utilizing a side-mounted limit pin to ensure the coin path remains entirely unobstructed during travel.
Dimensions
- Overall Envelope (Dispenser): 34 × 56 × 75 mm (when closed)
- Slider Thickness: 7.2 mm
- Coin Bore: 25.2 mm (optimized for 24.26 mm quarters)
Assembly
The main body, slider, cap, and limit pin print separately without supports. Insert the slider into the main body track, align the side slot with the right-hand hole on the body, and push the limit pin flush into the side countersink to capture the mechanism.
Remix ideas
- Threaded Cap: The top of the magazine tube features a coarse 4mm-pitch thread. Alter the tube height to make a shorter 20-coin version.
- Coin Bore: Tweak the internal offset diameter for other currencies or custom arcade tokens.
- Slider Thickness: Scaling the Z-dimension alters how many coins drop per pull (currently dialed for exactly four 1.75 mm thick quarters).
Images
More like this
Explore more in Storage & Organization →
Mechanical 40-Quarter Dispenser
A fully mechanical, gravity-fed coin magazine tailored for standard U.S. quarters. Designed to slip into a pool cue bag, it stores a full $10 roll vertically and cleanly dispenses exactly $1 (four quarters) per cycle into the palm of the hand. The mechanism relies on a two-stage sliding escapement. In the resting position, the bottom four coins sit perfectly flush inside the 7.2mm-thick slider pocket. When the thumb tab is pulled outward, a chamfered ramp on the top trailing edge of the pocket catches the fifth quarter and guides it smoothly onto the solid tail of the slider, suspending the rest of the stack. Once the pocket aligns with the drop chute at full extension, the isolated four quarters fall through. A captive printed pin mounted from the base runs in an internal track on the slider, acting as a hard travel limit for both the pull and return strokes. Remix & Tuning Hooks Threaded Cap: The top of the magazine tube now features a coarse 4mm-pitch thread, securing the cap firmly for travel. Magazine Height: The tube is dimensioned at 75mm to easily clear forty 1.75mm-thick quarters. Snip the cylinder height in the code to make a shorter 20-coin version. Coin Bore: Currently 25.2mm to allow 0.47mm radial clearance for a 24.26mm quarter. Tweak this offset for other currencies or tokens. Slider Thickness: The exact 7.2mm thickness dictates the dispense count (four coins). Scaling this Z-dimension alters how many coins drop per pull. Tolerances: The slider track relies on a 28.5mm bridge in the main body. If your printer sags on bridges, the slider can be sanded lightly, or the track height (7.6mm) can be nudged up.
DropCyl — Rotary Quarter Dispenser
DropCyl is a fully mechanical, gravity-fed coin magazine tailored for standard U.S. quarters. Designed to store a full $10 roll vertically, it now dispenses exactly $1 (four quarters) per cycle with a quick twist of the ribbed rotary drum. The iconic 8-ball viewing window punches cleanly through both sides, letting you check your count at a glance while keeping the footprint extremely compact. Features Rotary Drum Action: A reliable half-turn escapement that isolates and drops exactly four coins at a time. Ergonomic Shell: Aggressive edge rounding on the base block and cap makes it comfortable to grip and slip into a bag. Dual Windows: The signature 8-ball cutout is fully symmetrical, meaning you can check the magazine from any angle. Travel Cap: A robust coarse-thread cap locks the stack down so it won't spill in transit. Print Notes Print the main body and cap standing upright. The rotary drum should be printed flat on its base. The captive limit pin drops into the bottom of the track during final assembly.
BunkMate — Magnetic Rail Tray
A sturdy tray that hangs over a bunk bed rail, keeping bedtime essentials close at hand. Features Magnetic Base: Features eight fully-enclosed pockets sized for 0.7" x 0.12" magnets. Pause your print to drop them in, and they'll be sealed inside the floor forever. Wide Hook: Designed with a 34mm gap to easily clear thicker bed frames. Print-in-Place: No supports required; prints upright with the hook flat on the build plate.
13-Inch Magnetic Sliding Box
What it's for A minimalist 13-inch sliding box with an ultra-flush interior (3.5" wide by 1" deep) and heavily magnetized slip joints. Designed for vertical printing without supports, this two-part closure uses eight 5x2 mm magnets hidden inside the 6 mm thick walls of the step-joint, creating a completely smooth interior cavity once assembled. Dimensions Interior: 88.9 × 25.4 × 330.2 mm (3.5 × 1 × 13 inches) Exterior Shell Walls: 6 mm thick Base Ends: 3 mm thick Magnet Sockets: Sized for 5x2 mm disc magnets (5.2 mm diameter x 2.3 mm deep) Print notes No supports needed. The halves print upright on their closed ends. 0.2 mm clearance is built into the male slip joint for a smooth glide up until the magnets catch. Add a small dab of superglue to the magnet pockets before pressing them in.
Trinket Box With Captive Hinge
Most 3D-printed boxes rely on thin plastic living hinges that fatigue and snap off after a week of use, or require separate filament fragments as pins that eventually back out. This print-in-place trinket box uses a five-knuckle mechanical barrel hinge with integrated teardrop pins to prevent bridging collapse. A front thumb-tab with an offset detent provides a positive snap closure so the lid doesn't flap open when jostled in a drawer. Dimensions: 70 mm x 50 mm x 30 mm overall footprint. Walls: 2 mm solid perimeters for rigidity. Tolerances: 0.4 mm clearance inside the hinge barrel to prevent the knuckles from fusing during extrusion. Printing: Print fully closed, flat on the base. Requires no supports.
Asymmetric 16-Slot Makeup Organizer
A single-piece makeup and vanity organizer built to the specified 200x140x90mm volume. The layout uses an asymmetric stepped profile to match compartment depths to their contents while maintaining a clean, minimalist silhouette. All interior vertical edges feature a 3mm radius to prevent powder buildup, and the outer shell carries an 8mm continuous radius. Specifications Dimensions: 200mm (W) × 140mm (D) × 90mm (H) overall. Brush Storage: Two rear compartments (90mm deep) sized for long-handled tools. Creams & Perfume: Twin mid-tier compartments (60mm deep) accommodating standard jars and bottles. Lipstick Grid: 16 independent 21.5mm square slots arranged in a 4×4 matrix (45mm deep). Jewelry Tray: Shallow front-left basin (30mm deep) for rings and small items. Printability: 2.4mm uniform wall and floor thickness. Prints flat without supports.