Parametric parts

Choose a tab: Gridfinity bin, Baseplate, PCB enclosure, Knob or Threads. The part rebuilds as you change a field; its size, volume, an estimated solid PLA weight and a closed-mesh check are under the view. Lengths can be shown in millimetres or inches (the toggle in the toolbar).

Gridfinity bin — width and depth in 42 mm grid units, height in 7 mm units (the stacking lip adds 4.4 mm), compartments across and front to back (1.2 mm dividers), a 45° label tab along the back of each compartment, a scoop (a fillet from the floor to the front wall, 0 to 1 of the largest that fits), 6 × 2 mm magnet and/or M3 screw holes under the feet (all cells or the corners only), floor and wall thickness.

Baseplate — thin (the profile only, lightest), magnet, weighted (a 21.4 mm × 4 mm pocket for a weight and pry slots under each cell) or screw-down (a countersunk hole in each cell). Fill a drawer takes the drawer’s inside size, fits whole units and turns the rest into a solid border — on both sides or one. Large plates may need splitting for your bed: the model splitter can cut them.

PCB enclosure — enter the PCB’s size, or Import KiCad / DXF: a .kicad_pcb gives the Edge.Cuts outline, the board thickness and the mounting holes (MountingHole footprints and non-plated holes of 2 mm and more, but not a connector’s locating pegs). Connector footprints from KiCad’s standard libraries (USB-C, Micro-USB, USB-A, barrel jack, RJ45, SD, microSD, HDMI, 3.5 mm jack) whose courtyard reaches within 2 mm of the board edge become port cut-outs on that side, centred on the footprint, so a board with its connectors placed needs no port typing; parts on the back get an opening below the PCB. Check the list — custom footprints with other names are not recognised. The KiCad board viewer's Make an enclosure sends a board here the same way. A DXF gives its outline (lines, arcs, polylines with bulges) and its 1.5–6.5 mm circles as holes. Then the gap round the board, the standoff height, the room above the PCB, wall, floor and corner radius. Lids: four screws in corner bosses (countersunk lid holes, inserts or self-tapping pilots), a snap-fit lid (a lip with bumps that click into a groove), or a lid that slides into grooves in the long walls. Standoffs take a heat-set insert hole (sizes from print tolerances), a self-tapping pilot or a clearance hole with a counterbore under the floor. Port cut-outs: pick the side, the connector and its position along the side (mm from the PCB’s left / front edge as you look at it) and Add — USB-C, Micro-USB, USB-A, barrel jacks, RJ45, SD and microSD, HDMI, 3 and 5 mm LEDs, buttons, a 3.5 mm jack, a toggle switch or a custom opening; each sits at its usual height above the PCB unless you give one. The list is plain text (side type position [height] [w h]), one per line. Vents are slots in the lid or the long walls; lid text (capitals and digits in a dot-matrix font) is raised or engraved.

Knob — diameter, height, taper and top chamfer; knurled, fluted or smooth grip; a pointer line, dot or notch; a skirt; the shaft (6 mm D, 6 mm knurled 18 / 20 / 24 teeth, 1/4″ round or D, 6 mm, 4 mm and 1/8″ round, a 25-tooth servo spline) with a diametral fit allowance; an M3 set screw with a nut slot from below.

Threads — a bolt (hex or knurled thumb head), a nut, a threaded rod, a round box with a threaded neck and its screw lid, or a heat-set insert test block. Sizes come from the fits and threads tables (ISO metric coarse and fine, UNC, UNF) or a custom diameter and pitch. The print clearance is diametral: bolts are made that much smaller and nuts that much larger on diameter, half each, which is how a printed pair finds its gap.

Export STL (one file per body), 3MF (all bodies, named and coloured) or STEP (faceted solids that Fusion 360, FreeCAD, Onshape and SolidWorks import as bodies). Enclosure lids are laid flat beside the base for printing; Assembled shows the lid in place in the view only.

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