Getting started with Gridfinity: printer, filament, and hardware

The useful first shopping list

This is a project-based shopping plan, not a claim that every Gridfinity design needs the same equipment. The Gridfinity Rebuilt maintainer provides selectable lips, holes, compartments, and base options. Those choices affect what you print and whether you need extra hardware.

Measure a usable rectangle, not the drawer label

Measure the drawer’s inside width and depth near the bottom where the baseplate will sit. Check for rounded corners, screw heads, sloping walls, and dividers. Measure closing clearance with the intended tools or supplies in place; the height of an empty drawer front is not necessarily usable storage height.

The community specification describes a 42 mm grid pitch and 7 mm height units. It is community documentation of the system, not a guarantee that every downloadable variation uses the same outer dimensions.

For an illustrative usable rectangle of 310 × 230 mm, seven columns by five rows occupy 294 × 210 mm of nominal grid. That leaves 16 mm across the width and 20 mm across the depth. If centered, the gaps are 8 mm and 10 mm per side before accounting for your chosen baseplate edges or filler design.

Do not stretch a standard bin in the slicer to absorb those gaps: that changes its mating geometry. Choose a documented edge-filler or custom-baseplate method instead.

Your whole drawer does not have to print at once

A modular baseplate layout lets a modest printer serve a much larger drawer. In the example above, the nominal 294 mm width may exceed your machine. Split the grid into printable sections using a design intended for that arrangement, then inspect each section’s actual bounds.

A nominal 4 × 4 grid spans 168 × 168 mm. On a hypothetical 180 mm-square bed, that leaves only 12 mm total along each axis before outside features, brims, or excluded areas. Verify the exported file and slicer preview rather than declaring a fit from the grid count alone.

Save a larger-printer purchase for a real recurring limitation. For a first drawer, printing several small sections can also make a failed plate less expensive to replace and a future layout easier to change.

Choose filament around the environment

For an ordinary indoor drawer, PLA is a reasonable material to investigate because it is straightforward to print and holds detail well. Prusa’s PLA guide also identifies its heat limitations. A sunny vehicle, hot workshop location, or other demanding environment needs a separate material decision.

Use a familiar plain filament for the test. Color is optional; a contrasting label or consistent bin grouping can help organization without making every part multicolor. Changing formulation and geometry together makes a fit problem harder to diagnose.

Suppose the slicer estimates 650 g for the drawer and you reserve another 100 g for tests and replacements. Your planned material use is 750 g. At a hypothetical $20 per kilogram, that is $15 of filament. It leaves 250 g from a new one-kilogram spool, assuming it actually contains that usable amount.

Compare material, diameter, spool compatibility, and delivered price with our PLA buying guide. The store link below is an optional filament-shopping route after those checks.

Magnets and screws are design options

Stu142’s drawings and notes describe optional magnet and screw holes, including the common 6 mm-diameter, 2 mm-thick magnet format. Inspect your exact file: a model can omit the holes, alter retention, or use a different base construction.

For an assumed design with four magnets in each of eight small bins, the bin-side requirement is 32 magnets. If the selected baseplate uses matching magnets too, count those separately. A package of 32 does not automatically complete both sides.

For a drawer that stays level, first test whether the mechanical baseplate engagement provides enough retention for your use. If you do use magnets, follow the design’s retention method and keep small loose magnets away from children and pets. Do not treat an unverified press fit as secure containment.

Print a base-and-bin sample before the full set

Print one small base section and one bin from the selected family. Check insertion, removal, rotation, and stacking if the chosen design provides it. Inspect the underside for first-layer swelling and the inside for the actual object fit.

Next, fill the bin and open and close the drawer. A container that fits perfectly while empty may leave too little finger access around the stored item. A label lip can obstruct an object or add height you did not allow for.

Use our tolerance guide if a fit needs adjustment. Correct the relevant feature or printing issue; indiscriminate scaling can fix one interface while breaking another. Keep the successful file version and slicer profile so later additions start from the same baseline.

When Gridfinity is worth expanding

Expand after the first drawer is useful for a week of ordinary work. Note which compartments are too small, which items need dedicated holders, and whether bins are actually being rearranged. Spend the next spool on improvements supported by that experience.

Skip a full modular conversion when existing dividers already solve the problem, when you need only one simple tray, or when a heavy item needs a different mounting method. Gridfinity’s flexibility is useful when the ability to reorganize matters to you.

Your first completed purchase list should name the files, measured drawer area, filament quantity, and only the optional hardware those files require. That is enough to start without committing to an entire workshop’s worth of bins.