This project emerged from a friend's request for an organizer that could work equally well on a desk or mounted on a wall. As an electronics enthusiast managing countless components—resistors, capacitors, LEDs, connectors, and microcontrollers—he needed extreme flexibility in how storage was configured. Standard organizers with fixed compartment layouts simply couldn't adapt to the wide range of part sizes and quantities typical in electronics work.
The modular drawer system builds on the successful Desk Organizer design, using the same 100×100 mm standardized grid and snap-fit connection mechanism. Six different module types offer configurations from single large drawers to arrays of four smaller compartments, all freely combinable and stackable. Each module includes mounting options for both desktop placement and wall installation, while integrated label spaces (with optional numbered tags from 001-100 or paper inserts) ensure you'll never lose track of what's stored where.
Review the six available module types and plan your layout based on what you're storing. Electronics components often work well with multiple 4-drawer modules for small parts, combined with 1-drawer or 2-drawer modules for larger items like Arduino boards, cable bundles, or tool sets.
Decide whether you want desktop placement or wall mounting. Both versions are available in the STL files—the wall-mount variant includes integrated screw holes, while the desktop version has a clean bottom surface. All modules in your configuration must be either wall-mount or desktop; they're not designed to mix.
Print settings:
Material: PLA (PETG also works)
Perimeters: 4 walls
Infill: 20%
Layer height: 0.2 mm
Supports: None required
Print time: ~9-10 hours per module (varies slightly by type)
Each module type includes both the frame and the appropriate number of drawers. Test fit the first drawer in each module type—drawer tolerances can vary slightly depending on the number of compartments in the module. If drawers are too tight, scale them to 99.8% in XY; if too loose, try 100.2%.
Modules connect using the same proven snap-fit mechanism as the Desk Organizer. Align the connectors on adjacent modules and press firmly until they click into place. The connection is secure enough for daily use but can be disassembled if you need to reconfigure your layout later.
Build your configuration horizontally (side by side) or vertically (stacked), or combine both directions for complex arrangements. The standardized 100×100 mm grid ensures everything aligns perfectly regardless of module type.
For desktop use: Simply place your connected module array on your work surface. The design is stable and won't tip when opening drawers.
For wall mounting: Mark positions for mounting screws using the holes in the back of each module. Use 3.5 mm wood screws and appropriate wall anchors for your wall type. Mount each module individually, then connect them using the snap-fit joints—this approach is easier than trying to mount an assembled array.
Each drawer includes a dedicated label area. You have three options: print the included numbered labels (001-100) available in the Printables files, insert paper labels cut to size, or leave them blank if you prefer visual identification. For electronics work, a numbering system combined with a spreadsheet inventory often works best.
This project demanded significant patience during development. Each module type required individual drawer tolerance adjustment—what worked perfectly for the single-drawer module didn't translate to the four-drawer configuration. The mechanical behavior of sliding drawers changes with the overall size and internal structure of the module, requiring iterative testing and refinement for each variant.
A critical discovery: tolerance needs scale with object size. Larger modules (like the 1-drawer type) can accommodate slightly looser fits, while compact modules with multiple small drawers (like the 4-drawer configuration) require tighter tolerances to prevent wobbling. This isn't immediately obvious when designing, but becomes clear during testing. Future modular designs should account for this scaling relationship from the start.
Creating six different module types might seem excessive, but electronics work proves the value of this variety. Small SMD resistors need different storage than bulky connectors or development boards. The ability to mix module types within a single system means users can optimize their layout for their specific inventory rather than forcing everything into uniform compartments.
Initial prototypes used identical drawer tolerances across all six module types. This resulted in drawers that fit perfectly in the 1-drawer module but were impossibly tight in the 4-drawer module, or drawers that slid smoothly in larger modules but rattled loosely in smaller ones. The tolerances that worked for one configuration consistently failed in others.
Each module type required its own calibration through iterative testing. Multiple drawer prints were necessary to dial in the correct fit—typically within tenths of a millimeter—for each module configuration. The final tolerances vary subtly between module types, with tighter clearances generally needed for modules with more compartments. This meant accepting that "one size fits all" doesn't work for mechanical fits in varying structural contexts.