Gridfinity Storage Box with Flip-over Hinge (Fixed Constraints)

Updates

2026-08-05 - v4.2

• Removed the headers over the top flipover hinge screwholes to match MrMakr's original design.

2026-08-05

• Updated generate script to also generate magnet holes

• Cleaned up the script to make it a little less complicated

2026-08-04 - v4.1

• Changed flip over screw holes into teardrop holes.

  • This reduces the sag at the top of the screwhole, making the assembly cleaner.

• Added a script to generate the models.

• Pre-generated models now go up to Z=15

Hardware

• For the handle:

  • 2x M3x16 hex-head screws

• For the hinges:

  • 4x M3x30 hex-head screws

• An M3 allen wrench

  • Theoretically any head will work, but you will want to screw these in at a right angle so the allen wrench + hex head is best.

• Pliers

Print Instructions

1. Choose a size in gridfinity units (X by Y by Z)

   1. A 5x5 fits on a 220mm by 220mm print bed

   2. You may be able to get bigger prints by rotating

2. Download the corresponding base and lid

3. Download the handle and nameplate matching your X measurement

4. Download the hinge matching your Z measurement

5. Download the uniform latch

Then print:

• 1 handle

• 1 nameplate

• 1 base

• 1 lid

  • You will likely want to download the pre-painted M3F file or paint the Gridfinity squares transparent

• 2 hinges

• 6 latches

Settings

I use no brim, no supports, laying flat.

0.4mm nozzle.

For the Base, Nameplate, Latches, Hinges, and Handle:

• Textured build plate (Aesthetics only)

• Avoid Crossing Walls: True

• Line Width:

  • First Layer: 0.82mm

  • Inner Wall: 0.82mm

  • Sparse Infill: 0.82mm

  • Internal Solid Infill: 0.82mm

• Sparse Infill Pattern: Gyroid

For the Lid:

(Most of these are for getting a clear lid, not for strength)

• Smooth build plate

• Layer Height: 0.28mm

• First Layer Height: 0.4mm

• Line Width 0.82mm (all of them)

• Elephant Foot Compensation: 0.015mm

• Ironing:

  • Ironing Type: All Top Surfaces

  • Ironing Pattern: Concentric

  • Ironing Inset: 0.41mm

• Detect Thin Walls: True

• Avoid Crossing Walls: True

• Top Shell Layers: 2

• Top Shell Thickness: 0.8mm

• Top Surface Pattern: Aligned Rectilinear

• Bottom Shell Thickness: 0.8mm

• Bottom Surface Pattern: Aligned Rectilinear

• Infill: 50%

• Sparse Infill Pattern: Rectilinear

• Sparse Infill Direction 90*

• Speed:

  • First Layer: 20mm/s

  • First Layer Infill: 20mm/s

  • Outer Wall: 120mm/s

  • Inner Wall: 120mm/s

  • Sparse Infill: 100mm/s

  • Internal Solid Infill: 120mm/s

  • Top Surface: 20mm/s

  • Gap Infill: 50mm/s

  • Ironing Speed: 20mm/s

  • Overhand Speed:

    • 0mm/s @ 10%

    • 50mm/s @ 25%

    • 25mm/s @ 50%

    • 5mm/s @ 75%

  • Bridge Spped

    • External: 30mm/s

    • Internal: 150%

  • Travel Speed: 500mm/s

• Acceleration:

  • First Layer: 20mm/s/s

  • Top Surface: 20mm/s/s

I recommend printing in PETG.  If printing in two materials, make sure to consider print compatibility (i.e. don't use clear PETG and PLA).

Assembly

1. Put the handle into position and secure using the 16mm screws.

2. Use the pliers to remove the in-model supports on the front, left, and right latch tracks.

3. Slide the latches onto the tracks.

4. Place the lid on the base and secure with the latches.

5. Put the hinges into place and secure using the 30mm screws.