Every Paint Collection Is Different — Your Organizer Should Be Too

If you paint miniatures, your collection is almost certainly a mix: chunky Citadel pots, slim Vallejo droppers, a few Army Painter Warpaints, one rogue bottle of craft acrylic you swear you will use someday. A Gridfinity paint organizer is the best way to tame that pile — but only if the pockets actually match the bottles you own. That is the part most downloadable holders get wrong, and it is the problem this guide solves.

Below: why Gridfinity is a great fit for hobby paint storage, why fixed-size STL holders fall short for mixed collections, and how to generate a tray matched to your exact bottles from a single photo — no CAD, no calipers.

Why Gridfinity Works So Well for Miniature Paint Storage

Gridfinity is a modular storage standard built on a 42 mm grid. You print a baseplate that sits in a drawer or on your desk, and bins snap onto it in any arrangement. For a hobby that grows one impulse purchase at a time, that modularity is the killer feature.

When your collection expands from 30 paints to 80, you do not redesign the drawer — you print another bin and drop it onto the same grid. Finished a project and want your metallics closer to hand? Swap two bins. Painting at the kitchen table tonight? Lift out the bin with tonight's palette and carry it over. Magnetized feet keep bins planted, and stacking lips let a brush bin ride on top of a paint bin when desk space is tight.

The Problem With Pre-Made Paint Holders

Search any model site for Gridfinity paint storage and you will find plenty of well-designed holders. Look closer, though, and each one assumes a specific bottle:

Citadel pot holders use roughly 33 mm openings — too loose for droppers, too tight for wash pots and some craft bottles.
Vallejo and Army Painter dropper holders use narrow openings around 25–26 mm that Citadel pots will never fit into.
Counts are fixed: bins come in 12- or 24-bottle layouts, while your collection is 47 paints across three brands and growing.

So a mixed collection means downloading three or four different holders, printing them in whatever counts the designer chose, and living with a patchwork of half-empty bins that eat drawer space. The system is modular; the holders are not personal.

Build a Custom Gridfinity Paint Organizer From One Photo

This is where a photo-based generator changes the workflow. GridPilot creates custom Gridfinity trays from a single top-down photo, sized to the actual objects in the picture. For paints, it works like this:

Stand your bottles upright on a flat, plain surface and group them however you want them stored — Citadel pots together, droppers together, or mixed by project.
Take one photo from directly above with your phone. Even lighting, no dramatic angles.
GridPilot detects each bottle's footprint and generates a pocket for every one — 33 mm circles for the pots, narrow wells for the droppers, all in the same tray.
Adjust pocket depth so tall dropper bottles sit deep enough to stay upright, and add finger clearance so you can pull a pot without tweezers.
Snap the tray to a Gridfinity footprint that fits your drawer or baseplate, then export a print-ready 3MF.

The whole process takes about a minute of actual work. No measuring bottle diameters with calipers, no Fusion 360 plugin, no hunting for a holder that happens to match your brand mix. The tray that comes out holds exactly your collection — 47 pockets for 47 paints, with the sizes and spacing already correct.

Layout Tips for a Paint Drawer That Actually Works

A few things that make a big difference once you are arranging bins on a baseplate:

Group by function, not alphabet. Base coats, layers, shades, and metallics in separate bins mirrors how you actually paint, and it makes the "what do I own?" check before a purchase much faster.
Keep your daily palette in the front row. Rattling around the back of a drawer is how droppers get buried and repurchased.
Leave 10–20% of pockets empty. Your collection will grow; your organizer should have somewhere for it to grow into.
Give washes and inks their own tray. When a wash pot leaks, you will be glad the spill is contained in one bin you can rinse in the sink.
Check drawer clearance height. Add your tallest bottle to the tray depth and baseplate thickness before printing, so the drawer still closes with droppers standing up.

Print Settings That Hold Up on the Hobby Desk

Paint trays are not structural parts, so they print fast and cheap. PLA is fine for a desk or drawer; PETG buys a little extra resilience if the tray will live near water pots and solvents. A 0.2 mm layer height, two perimeters, and 10–15% infill produce a sturdy tray, and simple round pockets need no supports. Most paint trays print overnight and use a modest amount of filament — the material cost is a fraction of what an off-the-shelf acrylic paint rack costs, and the fit is incomparably better.

Start With the Paints You Actually Own

The best paint organizer is not the one with the cleverest design — it is the one shaped like your collection. Gridfinity gives you the modular grid; a photo-based generator gives you pockets that match every pot, dropper, and rogue craft bottle you own, in one tray, on the first print.

Stand your paints up, take one photo, and see the tray it produces. Try GridPilot free →

Gridfinity Paint Organizer: Custom Trays for Citadel, Vallejo, and Army Painter (From a Photo)