Gridfinity Rugged Case "Light" R3 - 150+ SIZES

I really like the Gridfinity Case by Aiko since but the the model is extremely resource hungy - without any sacrifice in functionality or robustness I shaved down everything to yield about 33 % savings and added a list of other cool features to this gridfinity box.

Key Features

• top and bottom Grid (no parts spilling out)
• resource friendly, yet rugged
• stands upright in 5 orientations
• 12 mm label slot in the front (9 mm for the 3 U version)

Size availability

My source file allows for various different sizes and shapes. For expierienced users in Fusion the file is fairly easy to handle, though due to limitations in Fusion (lacking conditions on features especially) changing certain parameters will break a few bits here and there. Especially edge cases need to be handled manually (especially the label slot or the handle for example). Therefore i won't release the source publicly for now. 

The following variants are tested and exported in various heights ranging from 3U up to 21U in common factors including the required build area. 

• 3x2U (135 × 108 mm)
• 3x3U (135 × 150 mm)
• 4x2U (177 × 108 mm)
• 4x3U (177 × 150 mm)
• 4x4U (177 × 192 mm)
• 5x3U (219 × 150 mm)
• 5x4U (219 × 192 mm)
• 5x5U (219 × 234 mm)
• 6x4U (261 × 192 mm)
• 6x5U (261 × 234 mm)
• 7x6U (303 × 276 mm)

If you are interested in other sizes, drop me a line (keep in mind that the project consists of hundreds of file - some sizes and experimental files requested by some folks are only available on the model page on Printables or on the model page on MakerWorld if i have not had time to sync the project pages, make sure to check both).

for your convenience i've included various logos if you want to store your printer accessories or tools in the box - if you miss a logo, just drop me a line

BOM

• 6x M3x30 screws
• 2x M3x16 or 2x M3x18 screws
• PETG or ABS recommended, PLA is OK aswell
• TPU (optional)

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Printing

I've included print Profiles for Bambu Lab Printers for all sizes that will fit on their machines. For other sizes, use the following rough guidelines (0,4 mm nozzle). 

• Lid and Base: flat on build plate, 3 walls 10 % infill
• Latches: upright 3 walls,  concentric top/bottom
• Handle: flat on build plate; 4 walls,  25 % infill; concentric top/bottom
• Seal: flexible Filament; flat on build plate; 3 walls concentric top/bottom
   

Logo on the lid

The logos in the lid are provided as a separate multipart file. To use them, follow these easy steps to make adjustments in your slicer software. This guide applies to PrusaSlicer, Bambu Studio, or OrcaSlicer:

1. Open the file in your slicer as "a single object with multiple parts."
2. In the object tree, delete any logos you don’t need, as well as the “Dummy (delete me)” body. Only the lid and the logos you want to keep should remain.
3. Change the type of the logo from “part” to “modifier.”
4. Orient the part so that the top side with the logo is facing the build plate. The "Auto Orient" function should simplify this step.
5. Set the filament or color of the logo to your desired color.
6. Remember that the logos are 0.6 mm high. This design is optimized for a multiple of a 0.2 mm layer height. If you use a different layer height, you may need to rescale the logo body to match your preferred height.
7. If you don’t have a multi-color-capable printer, you can change the logo type to “negative part.” This way, the printer will omit the logo. Be aware that for logos with a larger surface area, this may require supports.

Assembly

• longer screws in the hinges or latches (from the outside)
• shorter for the handle (from the inside)
   

Changelog

2025-11-24 R3 v58:

• added new size: 3x3

2025-08-30 R3 v58:

• fix: 4x3 screw holes adjusted
• add: a few files (heights) without profiles

2025-06-21 R3 v58:

• added new size: 5x3

2025-04-27 R3 v58:

• added new size: 7x6

2025-01-26 R3 v47:

• added new size 4x4

2025-02-22 R3 v47:

• added 6x1U experimental

2025-01-26 R3 v44:

• added new size 4x4

2025-01-07 R3 v44:

• added 2 new sizes 3x2 and 6x4

2024-12-08 R3 v44:

• added new size 4x2

2024-11-03 R3 v38:

• added 2 new sizes 5x5 and 6x5

2024-11-01 R3 v34:

• lids with logos added (new logos, 2 different sizes)
   

2024-11-01 R3 v31:

• added experimental 5x5 version in 5 and 6U

2024-10-30 R3 v26:

• complete overhaul with fully parametric base file in the background
• shaved off even more material and print time, prints now roughly 5 % faster (~ 15 minutes) 
• compatible with existing boxes - but be aware that the geometry slightly changed, your inner monk might be a bit triggered, if you combine an old lid with a new box or vice versa
• virtually an size an variant possible
• 5x4 and 4x3 are added for now
• if you miss a variant, drop me a line

2024-06-22 R1 v35:

• added tool company logos: Bosch, DeWalt, Dremel, Makita, Milwaukee, Ryobi, Stanley & Stihl 

2024-06-10 R1 v34:

• added an Anycubic lid

2024-05-18 R1 v31:

• added a 9U version

2024-05-18 R1 v33:

• added a 12U version
• slight geometry change to the label slot to make it easier to print (thx to Markurian for the input)
• parts are fully compatible
   

Akio

• thinner lid and bottom
• no magnets
• moved the handle to the center
• fixed “unprintable” fillets on the underside
• added 0,2 mm tolerance for closing the lid
• changed the lid tilt angle and inner width slightly
• reworked the inner lid geometry
• added a slot for a label

Pred

• original source
• inner geometry for lid used as base for revised geometry

Whity

• outside geometry as base
• chamfers and fillets on top/bottom
• latch geometry with chamfers

PeterDesigns

• parametric handle, shortened
• rib for upright position
• overall crosscheck and trial/error for dimensions/prototyping

material, time  and size savings

• before:  ~ 12 h; ~ 420 g; > 65 mm height
• after: ~ 8,5 h; ~ 325 g; < 50 mm height