Flashcard Holder Set A7 (105 × 74 mm) — QuickDock Wall Mount, Stackable

Simple modular holder system for A7 flashcards (105 x 74 mm). I built it to make a physical Kanban board, but it works just as well for a spaced repetition wall, a habit tracker, or any other card based system.

The card sits in a shallow tray with a deliberately snug fit. No clips, no lid, no magnets. The card holds itself in place by friction, even when the holder hangs vertically on a wall.

The set has three printable parts. Print only what you need.

The parts

• Card Holder. The main tray. Two holes in the base plate let you screw it down, or take the QuickDock Plug instead.

• QuickDock Plug. Plugs into those same two holes and adds a simple L shaped hook to the back of the holder.

• QuickDock Plate. The counterpart hook with screw holes. Fasten it to a wall, a door, a whiteboard, a shelf edge, or a piece of plywood.

Why the hook mount

With the hook system you never have to pull a card out to move it. You lift the whole holder off its bracket and hang it on another one. Moving a task from To Do to Doing means moving the holder, card and all. Put up a row of brackets for each column and the board becomes something you rearrange with one hand.

If you prefer a fixed layout, skip the hook parts and screw the Card Holder straight to the wall through the same two holes.

Features

• Fits A7 flashcards and index cards at 105 x 74 mm, the common European flashcard size

• Two mounting holes that take either screws or the QuickDock Plug

• Cutouts on the left and right side so you can push the card out with a fingertip. No scraping around with a fingernail to swap a card

• Interlocking top and bottom edges, so several holders can be stacked vertically into one continuous column

• Two part hook mount for lifting a loaded holder off the wall and hanging it somewhere else

Print settings (as tested)

• Printer: Prusa MK4S with MMU3

• Material: PLA

• Layer height: 0.20 mm (PrusaSlicer 0.20 mm STRUCTURAL)

• Supports: none for the Card Holder and the QuickDock Plate. The QuickDock Plug needs simple supports

• Brim: not needed

• Orientation: flat on the bed as sliced, no rotation required

About the files

Every file is a PrusaSlicer 3MF project set up for a Prusa MK4S with the MMU3, so it opens with several extruders assigned and a wipe tower.

• flashcard-holder-a7-v1.0.3mf is the card tray

• quickdock-plug-a7-v1.0.3mf is the part that plugs into the tray and carries the hook

• quickdock-plate-a7-v1.0.3mf is the counterpart you fasten to the wall

You do not need an MMU to print this. All three parts are single colour bodies. If you print with one extruder, open the project, assign every part to extruder 1 and switch the wipe tower off, or simply import the geometry into your own profile. Everything else stays the same.

If you do run multi material, the set is a good place to use up leftover filament, and colour coding your Kanban columns works nicely.

A note on the fit

The card pocket is tight on purpose, because that is what makes the card stay put on its own. If your cards are thicker than usual, or your printer runs a little wide, scale the model to 100.5 or 101 percent in X and Y. A light pass with a hobby knife along the inner edges also does the job. The same goes for the QuickDock Plug. It should go in firmly and stay there.

Version

Version 1.0. First public release of the full set. It prints well and I use it every day, but I plan to keep refining it.

License

CC0 1.0, public domain. Do whatever you want with it. Print it, sell prints, remix it, use it commercially. No attribution required, though I always enjoy seeing what people build with it.