Dabba — design custom 3D-printed cases

Make

Gridfinity base 6×2 mm magnet holes

Compartments

Name

Holds

Object size measured, before fit clearance

Width Length Height

Extra fit clearance

Pocket depth

Automatic

Pocket shape

Corner radius

Floor rounding

Rim round-over

Taper

Taper widens the pocket towards the rim so the object lifts out easily; walls are spaced so their thinnest point, at the top, still meets the inner-wall setting.

Sideways in its slot

Front-to-back in its slot

Position drag it in the plan

Across Front–back

Dragging it in the plan or typing a position switches that direction to Custom, measured from the middle of its slot. A moved compartment can overlap its neighbours (the pockets merge) but stays inside the outer wall.

Add a compartment

Finger notches

Left Right Back Front

Notch width

Notch depth

70% of pocket

A round scoop in the wall beside the object, so a finger can reach in and lift it out.

Click a compartment in either view to select it. In the plan, drag an edge to resize, use + to add a neighbour, or press Delete to remove one.

Fit & height

Fit clearance, each side

The gap around every object in its pocket. A compartment can add to it, or take some away, with its own extra clearance.

Headroom above tallest object

Shorter objects

Interior height from tallest object

Interior height

Base share of the height

Printer

Layer height

Use the same layer height in your slicer. Floors, the parting line, the rim and the press latch's web all land on whole layers of it, so nothing asks for a partial layer.

Print bed

Printer

Bed width

Bed depth

Show the bed under the print layout

Drawn in the 3D view's Print layout, with a 10 mm grid, and you are warned if the parts don't fit on it.

Plates

The base and lid get a plate each when they are different colours, so each plate prints in one colour with no filament swaps between them, or when they only fit the bed apart.

Walls

Side walls

Base floor

Lid top

Inner walls (thinnest)

Inner walls are never thinner than this. Where neighbouring objects differ in size the wall between them thickens instead, unless the compartment is set to Fill.

Edges & tapers

Outside

Corner radius

Lid top edge

Base bottom edge

Edge profile

Wall taper

Taper leans the outside in towards the top and bottom; the parting line stays the widest point.

Each pocket's corners, floor, rim and taper are set with the compartment, under Compartments.

Texture outside surfaces

Texture the outside

Pattern

Image tile for the Image pattern — dark is deep

Depth

Outer depth

Depth is high-to-low; outer depth is how far the high points stand out. At 0 the pattern is cut in, its high points flush with the wall; at the depth it stands out, its low points flush. Below 0 the whole pattern sinks into a recessed panel, never closer than 0.8 mm to the inside.

Pattern size

Angle

Plain borders

All borders

	Bottom edge	Top edge	Face
Base
Lid

Plain band left untextured at each edge, as the case sits closed: the base's bottom edge and the parting line, the lid's parting line and its top edge, and round each face. Drag a field's edge to scrub it. All borders sets all of them at once.

Each side

	Base	Lid
Front
Back
Left
Right
Face

The preview shades the texture per pixel; the export samples a much finer surface and simplifies it to within 0.01 mm, so exports take a few seconds longer.

Face is the base underside and the lid top. Texture stops with a crisp edge, a plain border short of rounded edges, the parting line and the face outline, so the halves still meet cleanly; decoration is cut through it. It makes much bigger files — the preview uses a coarser mesh than the export.

Alignment lip

Lip on the base rim

Lip height

Clearance

Along these edges

Back Front Left Right

The inner half of the base wall rises into a matching groove in the lid, so the halves line up and close dust-tight. Untick an edge — usually the clasp side, — and the lid's groove there is filled in too, so base and lid meet flush on the inside where you reach in.

Lid interior

Gap above the base walls

Pocket depth in the lid

One open space under the lid.

Dividers rise from the lid top over every base wall, so nothing can slide from one compartment to another when it's closed. They stop the gap short of the base walls.

One thin divider wherever two compartments' areas meet, as thick as the inner-wall setting. Each compartment gets the whole rectangle it takes up in the layout, whatever its shape, and the case's own wall closes any side with no neighbour. Compartments moved over each other count as one area, with one wall round the lot. Lighter and quicker to print than walls only.

Walls over the base's walls, with a matching pocket over every compartment. They stop the gap short of the base walls so the lid closes without rubbing; near the lip they also step back by the sideways sweep the lid makes as it swings.

Hinge filament pin

Style

Printed upright, each knuckle's ring is held across the pin only by the layers at pin height, which is where hinges crack. A horn behind every knuckle makes that part of the ring thick, and it is also a stop: the lid rests on whole faces instead of levering the knuckles.

Every knuckle is a small piece of its own, printed standing on end so the ring lies within its layers, the strongest way round. Each slides onto a dovetail rail on the case, and the pin then holds them all on; a drop of superglue takes up any rattle.

Opens to

The lid stops here, held by the horns. They only fit where the lid never goes, so past about 150° they shrink, and at 180° there is no stop and no horn. With an automatic knuckle size, a reinforced hinge's knuckles grow with the stop to make up for it: 6 mm at 120° or less, rising evenly to 8 mm at 180°. Slide-in leaves are the stronger choice for a lid that has to open flat.

Rail fit

Clearance on each side of the rail. 0.15 mm slides on with a firm push on most printers; go up if a leaf won't go on, down if it rattles.

On the

Hinges

Knuckles per hinge

Hinge length

Knuckle diameter

Automatic: follows the style and stop

Pin hole

Gap between knuckles

Swing clearance

Inset from corners

Knuckles alternate between base and lid on one axis. Push a length of 1.75 mm filament through the hole, then melt or trim the ends. The 2.1 mm hole leaves room for holes printed on their side coming out a little small; go to 2.2 mm if the pin still binds, or 2.0 mm for a stiffer hinge.

Clasps

A flexible tab on the lid hooks into a slot in the base. Prints upright with the lid, no supports; flick the grip to open.

A separate hook pivots on a filament pin through lugs on the lid, and swings down over a second filament pin held by lugs on the base. Print the hook on its side.

A jewellery-box swing hook: a flat hook turns on a filament pin set into a boss on the lid, and its curved tip threads through an eye on the base. Turn the knob to open. The hook prints flat as its own piece.

A stiff tab hangs from the lid on a thin web near its top. Press the tab above the web and it rocks, lifting its hook out of the slot in the base; close the lid and it clicks back in. The web is both hinge and spring, and it prints flat, so it bends along its layers rather than across them.

Pockets for round magnets in the base rim and lid, meeting face to face. Glue them in, minding the polarity.

Small ridges on the alignment lip click into matching dimples in the lid. Needs the lip.

Count

Width

Tab thickness

Lever thickness

Web thickness

Reach below the rim

Hook depth

Grip lip to flick it open

Lug / hub diameter

Extra hook length

Magnet diameter

Magnet thickness

Bump radius

Clearance

Decoration

Decorate this face

Relief style

Details are filled with their own colour, flush with the surface — crisp, since this face prints against the bed. Needs a multi-material printer.

Details are recessed into the surface. Single colour.

This face prints against the bed, so raised detail would be printed first and the whole half would rest on it. Inlay or engraved is usually better.

Inlay depth

Relief depth

Border

Follows

Inset from edge

Line width

Gap

Count

Corner radius

Text

Font

Bold Italic

Stroke width

Size

Letter spacing

Line height

Rotation

Position across

Position up/down

Colour

Pictures

Trace

Threshold

Size

Rotation

Mirror

Position across

Position up/down

Colour

Switch the plan view to Lid top or Base underside to drag text and pictures; corner handles resize, arrow keys nudge.

Colours one per element

Base Lid

Border (this face)

Your prints

The designs you make here and the files and prints you get from them are yours: use them, sell them, share them, change them, for any purpose, with no credit needed. The licence above covers this tool's own code, not what you make with it.

They come with no warranty. Check the fit, strength and safety of a print before trusting it with anything that matters, and keep small parts away from young children.

Privacy

No accounts, cookies, analytics or trackers, and the page loads nothing from other sites. Your designs and pictures stay in this browser (its local storage), and leave it only as files you save or export yourself.

A share link carries the design after the #, which browsers never send to the server, so it goes only where you send it — and anyone you send it to can read it. Pictures are never put in links.

The site is hosted on GitHub Pages; GitHub keeps standard request logs (such as IP addresses) under its privacy statement. To delete everything kept here: Designs → Delete all saved data, or clear this site's data in your browser.

drag to move (Alt: no snapping) · drag an edge to resize · + adds a neighbour, the outer pills a whole side · Delete removes

Bed Lid 105°

drag to orbit · scroll to zoom · right- or shift-drag to pan · click a compartment to select it