Clamshell Case Set the inside, pick the split. A print-in-place hinge that arrives already working. FREE A hinged case built around whatever goes in it — cotton buds, floss picks, calipers, scissors. Set the inside and the whole thing regenerates: a print-in-place hinge that arrives already working, snapped into a base and lid that shut with a sprung catch. Configure & download — free Measure what you want to keep, not the box. Give it an inside length, width and depth and every part rebuilds around those numbers — the hinge grows with the case, so a floss-pick tin and a caliper case are the same design at two sizes rather than two designs.The hinge prints closed, in place, already hinged. No pin to push, no knuckles to thread, nothing to glue. It lifts off the plate working, and clips into the base and lid on barbed connectors.Decide how the depth splits: an even clamshell that opens like a book, or a shallow lid on a deep tray when the contents only want one side. A sprung catch holds it shut, and a thumb relief in the rim flicks it open. HighlightsBuilt to your contentsSet the inside length, width and depth — every part regenerates around your numbers.Choose the splitDecide how the depth divides between lid and base, from an even clamshell to a shallow lid on a deep tray.Print-in-place hingeThe hinge prints closed as one piece and comes off the plate already working — no pins, no assembly.Snaps togetherThe hinge clips into the base and lid on barbed connectors. No screws, no glue.Snap-shut catchA sprung catch holds it closed, with a thumb relief in the rim to flick it open.FreeConfigure, preview in 3D, and download at no cost. Configure & download In your downloadPrint-ready 3MF platesEvery part laid out on plates packed to your printer's bed and sorted by filament color — open in your slicer and go.Every STLThe individual part meshes as well, if you'd rather arrange the plates yourself.A parts listA manifest of every part and how many of each, so you know exactly what you're printing.An assembled 3D model in your colorsThe whole thing built and colored the way you configured it — your reference while you print and put it together. Configure your case Inside width75 mm80 mm85 mm90 mm95 mm100 mm105 mm110 mm115 mm120 mm125 mm130 mm135 mm140 mm145 mm150 mm155 mm160 mm165 mm170 mm175 mm180 mm185 mm190 mm195 mm200 mm205 mm210 mm215 mm220 mm225 mm230 mm235 mm Inside depth50 mm55 mm60 mm65 mm70 mm75 mm80 mm85 mm90 mm95 mm100 mm105 mm110 mm115 mm120 mm125 mm130 mm135 mm140 mm145 mm150 mm155 mm160 mm165 mm170 mm175 mm180 mm185 mm190 mm195 mm200 mm205 mm210 mm215 mm220 mm225 mm230 mm Inside thickness20 mm25 mm30 mm35 mm40 mm45 mm50 mm55 mm60 mm65 mm70 mm75 mm80 mm85 mm90 mm95 mm100 mm105 mm110 mm115 mm120 mm125 mm130 mm135 mm140 mm145 mm150 mm155 mm160 mm165 mm170 mm175 mm180 mm185 mm190 mm195 mm200 mm205 mm210 mm215 mm220 mm225 mm230 mm235 mm240 mm245 mm250 mm Lid / base split10 lid / 90 base20 lid / 80 base30 lid / 70 base40 lid / 60 baseEven — 50 / 5060 lid / 40 base70 lid / 30 base80 lid / 20 base90 lid / 10 base PrinterKobra 3 — 250×250×260 mmKobra S1 — 250×250×250 mmKobra S1 Max — 350×350×350 mmA1 — 256×256×256 mmA1 mini — 180×180×180 mmH2D — 325×320×325 mmP1P — 256×256×256 mmP1S — 256×256×256 mmP2S — 256×256×256 mmX1 Carbon — 256×256×256 mmX1E — 256×256×256 mmEnder-3 V3 — 220×220×250 mmHi — 260×260×300 mmK1 — 220×220×250 mmK1 Max — 300×300×300 mmK1C — 220×220×250 mmK2 — 260×260×260 mmK2 Plus — 350×350×350 mmK2 Pro — 300×300×300 mmK2 SE — 220×215×245 mmCentauri Carbon — 256×256×256 mmNeptune 4 Max — 420×420×480 mmNeptune 4 Pro — 225×225×265 mmCORE One — 250×220×270 mmCORE One L — 300×300×330 mmMINI+ — 180×180×180 mmMK4S — 250×210×220 mmXL — 360×360×360 mmCustom bed… Bed width (mm) Bed depth (mm) Bed height (mm) Colors Primary⇆SecondaryIts own colorSame as primary⇆TertiaryIts own colorSame as primarySame as secondary Big Macks logoNo logoEmbossed logo — save $0.503-color logo inlay — save $1.00 We'd love it if you could help get the Big Mack's word out! The logo sits on the underside of the base. Embossed cuts the mark into it — one filament, prints on any printer. 3-color prints it in our red, white and black as part of the base — it needs a multi-material printer. Give it the inside you need and every part rebuilds around it — the hinge grows with the case. It downloads as three parts: a base, a lid, and a hinge that prints closed and comes off the plate already working. They clip together on barbed connectors, so there is nothing to glue and no pin to push. Price: FREE (one licensed file — $1.00 off for carrying our logo) Update 3D preview Click “Update 3D preview” to render your configuration in 3D.