ᐅ Kallax Modifications Using 3D-Printed Parts – Has Anyone Tried This Yet?

Hello everyone,

I recently redesigned my Kallax shelving unit a bit and find the idea of customizing some parts using 3D printing very interesting. Specifically, I’m curious if anyone in this forum has experience enhancing Kallax modules functionally or visually with 3D-printed components. For example, special connectors, hinges, box holders, or clever inserts to make better use of the storage space.

I’m mainly interested in practical, tested solutions—how durable are the printed parts really? Which materials have proven effective? Also, are there any useful guides or sources for reliable STL files?

I would appreciate any tips and also advice on which modifications are worthwhile and which might not make much of a difference. I’m personally thinking about designing some holders for plants and cables but would like to hear your experiences before getting started.

Looking forward to your replies!

Hello,

I have previously 3D printed small brackets for Kallax inserts – PLA is fine, but PETG is more durable. Simply size the connectors so they fit the Kallax profiles. You can often find STL files in forums or on platforms like Thingiverse. For cable holders, a flexible design is worthwhile.

GAUPU schrieb:
How durable are the printed parts really? Which materials have proven effective?

That depends on their intended use. For static or decorative elements, PLA is usually sufficient since it is rigid and easy to print, but it is less heat resistant and can age faster under stress or UV exposure. For functional parts, such as mounts or moving components, I recommend PETG or even ASA, as these materials are significantly tougher and more weather resistant.

GAUPU schrieb:
Are there also clever guides or sources for useful STL files?

Besides Thingiverse, PrusaPrinters is a good place to start. There you can also find several mods designed specifically for Kallax, for example, to add doors or swivel shelves. If you are familiar with CAD, it’s also worthwhile to design your own adapters, as the fits are often quite customized.

Fit accuracy is important. The Kallax system consists of wood with slight variations in dimensions, so it’s best to print your parts with some tolerance and adjust them as needed.

Regarding your idea about plant holders: make sure the mounts are sturdy enough and do not direct moisture directly onto the wood. Adding a small shelf or an intermediate layer made of plastic could improve moisture protection.

I recently designed and printed a mount for LED light strips that snaps perfectly onto the Kallax frame—it works great but requires precise measurements and testing.

If you like, I can share tips for 3D modeling for such applications. What 3D printer hardware and software are you currently using?

Ankeli schrieb:
A flexible file is worthwhile for cable holders.

Exactly! For example, I printed small clips using TPU filament, which I simply glued to the edges of the Kallax units. They are very flexible, hold cables securely, and can be easily removed or repositioned.

I think 3D printing makes the Kallax even more versatile—whether for organization or decoration. Recently, I even made small, swivel bottle holders for the inside of the shelves—perfect for craft supplies or brushes.

Of course, it requires some patience and precise fitting, but the effort is definitely worth it, especially if you want to customize a bit. Sometimes a colorful finish with acrylic paint is also worthwhile, turning the Kallax into a design feature. 😉

Have you ever tried experimenting with different filament colors and finishes? It’s really fun and adds a fresh touch!