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Gridfinity baseplate with magnet holes, sized to your drawer and split for your bed

A Gridfinity baseplate with pockets for 6 x 2 mm magnets, sized to the inside of your drawer. Type the drawer's width and depth: it fills the drawer with the largest 42 mm grid that fits, adds a border for the rest, and splits the plate into pieces that fit your bed, joined by bowtie clips under the seams. The default 400 x 300 mm drawer gets a 9 x 7 grid (378 x 294 mm) in 4 pieces with 16 clips, the largest piece 220.75 x 170.75 mm.

Customize Change it with AIFree STL, 3MF and STEP, no accountMeasured on the model

Parameters

Drawer inside width (X)mm
Drawer inside depth (Y)mm
Printer bed Xmm
Printer bed Ymm
Gap between parts on the platemm

Sliders and downloads are free. Changes by the AI designer use credits like any design; new accounts start with free ones.

The pieces are 8.15 mm thick: each magnet pocket is 6.5 mm wide and 2.4 mm deep over 1 mm of plastic, open at the top so the magnets go in before the bins. The plate is 0.5 mm smaller than the drawer so it drops in. Print one clip and try it on one seam before printing them all. Beds up to 256 mm are covered here; for a bigger bed, or a plate without magnets, use the Gridfinity generator.

Parameters

Every slider in the viewer above, with the range the model accepts. The model rebuilds valid at both ends of each range.

ParameterRangeDefaultWhat it changes
Drawer inside width (X)60 to 1,000 mm400 mmInside width of the drawer, measured at the bottom. The plate comes out 0.5 mm smaller so it drops in.
Drawer inside depth (Y)60 to 1,000 mm300 mmInside depth of the drawer, front to back, measured at the bottom.
Printer bed X120 to 256 mm256 mmWidth of your print bed. Pieces keep 5 mm free on each side.
Printer bed Y120 to 256 mm256 mmDepth of your print bed. A smaller bed splits the plate into more pieces.
Gap between parts on the plate5 to 30 mm10 mmSpace between the pieces in the viewer and in the downloaded file. The pieces themselves do not change.

Proof: measured on the model

What the design must satisfy and what our CAD engine measured on the model at the default values. Only measured values are shown here; nothing on this page has been printed by us yet.

RequirementWantedMeasured
Magnet pockets of 6.5 mm, 4 in each of the 63 cells252 pockets252
Magnet pocket depth, for 2 mm thick magnets2.4 mm2.4 mm
Plastic under each magnet pocket1 mm1 mm
Plate width with the pieces together, 0.5 mm under the 400 mm drawer399.5 mm399.5 mm
Plate depth with the pieces together, 0.5 mm under the 300 mm drawer299.5 mm299.5 mm
Longest side of the largest piece, within a 256 mm bed less 5 mm each side246 mm or less220.75 mm
  • piece_1: valid solid, one body, 220.8 x 170.8 x 8.2 mm, fits a 256 x 256 x 256 mm printer; overhangs: 0.5% of surface would need support.
  • piece_2: valid solid, one body, 178.8 x 170.8 x 8.2 mm, fits a 256 x 256 x 256 mm printer; overhangs: 0.5% of surface would need support.
  • piece_3: valid solid, one body, 220.8 x 128.8 x 8.2 mm, fits a 256 x 256 x 256 mm printer; overhangs: 0.6% of surface would need support.
  • piece_4: valid solid, one body, 178.8 x 128.8 x 8.2 mm, fits a 256 x 256 x 256 mm printer; overhangs: 0.6% of surface would need support.
  • clip: valid solid, one body, 13.7 x 8.6 x 2.6 mm, fits a 256 x 256 x 256 mm printer; overhangs: 0.0% of surface would need support.

Print notes

Orientation
Each piece flat on the bed, as modelled, one piece per plate; the clip flat as well.
Supports
None.
Material
PLA
Layer height
0.2 mm
Hardware
252 x 6 x 2 mm disc magnets for the default drawer (4 per cell); Glue for the magnets: the pockets are 0.25 mm wider than the magnet all round
Time and filament
About 17 h 30 min and 390 g at the default size: a rough estimate from the model's volume and surface (PLA, 15% infill, about 1 mm of walls, 0.2 mm layers), not a slicer.
  • Print the clip once per cell along each seam: 16 times for the default drawer. The clips press into the bowtie pockets under the seams; try one on one seam first.
  • Put every magnet in the same way up, and fit the magnets in your bins the way that pulls toward them.
  • Each piece fits a 256 mm bed alone, but the downloaded file holds all of them side by side: give each piece its own plate in your slicer.

How it was designed

Designed with buildcad's AI agent, checked by the buildcad team. This is the request it started from and an edited account of what it did (more on how text to CAD works).

The request

A Gridfinity baseplate with holes for 6 x 2 mm magnets for my workbench drawer, which is 400 x 300 mm inside. I want to type the drawer size: it should fill the drawer with the biggest grid that fits plus a border for the rest, split into pieces that fit my 256 x 256 mm printer bed, with clips to join them.

  1. 1

    It ran the planner first

    Before modelling, the agent ran buildcad's Gridfinity planner on the 400 x 300 mm drawer and a 256 mm bed: a 9 x 7 grid (378 x 294 mm), a plate 0.5 mm smaller than the drawer, a border of 10.75 mm left and right and 2.75 mm front and back, and a 2 x 2 split with the border on the outer edges.

  2. 2

    Two blocked shortcuts

    It tried to read the helper's options through Python's inspect module and then through a docstring. The sandbox refuses both, so it went on with the documented calls.

  3. 3

    Magnets on, pieces laid out

    With magnet pockets on, each piece grew from 6.75 to 8.15 mm thick to keep 1 mm of plastic under each 2.4 mm pocket. It laid the 4 pieces out in a grid with a gap between them and showed the clip once, since all 16 are the same.

  4. 4

    What it measured

    It counted 252 magnet pockets of 6.5 mm (4 in each of the 63 cells), checked that every piece fits the bed (the largest is 220.75 x 170.75 mm) and measured the pocket depth with a ray down one pocket. Its sweep built every slider extreme as valid single bodies.

  5. 5

    What it left open

    It did not check how the clips fit the seams, so its reply asks for one clip on one seam before printing all 16, and for every magnet to go in the same way up.

  6. 6

    Our change

    The run let the bed sliders go to 500 mm. Every Library item is checked against a 256 mm bed, so we capped both at 256 mm. For a bigger bed, the Baseplate tab of the Gridfinity generator takes beds up to 400 mm.

One run of the agent: 2 min 20 s, about $0.31 of model time at list price (claude-sonnet-5-5). We changed the code afterwards, as described in the last step.

Change it with AI

Set the sliders, then press Change it with AI: a copy goes to your designs at those sizes and the designer opens with a suggested change you can edit. Its changes use credits like any design; new accounts start with free ones.

Change it with AIDescribe your own part Use it from your own AI (MCP)

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