Not random STL files — these are purpose-built kits where every 3D-printed part is designed to connect, move, and function as part of a complete build.
Every part has a purpose. Tab-and-slot joints, screw-through holes, axle mounts, and press-fit connections are designed with real tolerances.
3D-printed gears and brackets connect to laser-cut birchwood panels. Real screws, springs, and rubber bands provide the mechanics.
These kits do things — launchers launch, racers race, windmills spin. They teach mechanical principles through actual working mechanisms.
Parts are designed for standard FDM printers with PLA filament. No supports needed for most parts. 0.2mm layer height, 20% infill.
Hole diameters, slot widths, and clearances are tested for real-world printing. Parts fit on the first try.
You get everything: 3D print files, laser-cut pieces, pre-sorted hardware, and illustrated assembly instructions.
Material
PLA (Polylactic Acid)
Layer Height
0.2mm recommended
Infill
20% standard, 40% for load-bearing
Min Build Volume
6" x 6" x 6" (150mm cubed)
Nozzle Size
0.4mm standard
Supports
Minimal — most parts print flat
Have a 3D printer at home? Download the print files and print the custom parts yourself. Buy just the laser-cut pieces and hardware from us.
Learn about 3D Printer Companion Mode →No printer? No problem. Submit your design and we'll 3D print all the parts, laser-cut the wood, sort the hardware, and ship the complete kit.
See pricing for build kits →Explore more: 3D Printing for Kids | 3D Printer Companion | DIY Maker Projects | Pricing
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