IKEA Trofast Bins for Kallax - Mounting Rails
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A sleek, durable rail system to integrate IKEA Trofast bins into your Kallax shelving using 3.5x20mm Spax screws.
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Updated at source:
Model information
- Source
- Printables
- Category
- Organizers
- License
- Creative Commons — Public Domain
Upgrade your IKEA Kallax with these custom-designed mounting rails, perfectly sized to hold Trofast bins. This modification turns any standard shelf cell into a high-density storage system, ideal for organizing everything from toys and LEGOs to workshop hardware. The mounts feature a sleek, chamfered profile that blends into the furniture for a professional, integrated look.
Quick Setup Guide
Hardware: Optimized for Spax wood screws (3.5 x 20 mm).
Spacing: While exact measurements depend on your bin size, a spacing of 12–13 cm between each rail typically provides a great fit for standard setups with the small trofast bins.
Symmetry: The rails are asymmetrical. Use the included 3MF file or simply mirror the part in your slicer to create a matching left/right pair.
Printing: For best results, use 3–4 walls and print the rails on their side to maximize the strength of the lip.
Pro Tip: To ensure perfectly level bins, cut a small scrap of wood to your desired height and use it as a temporary spacer to rest the rails on while you drive the screws.
Note: I designed these as a simple, personal storage solution for my own home. Because of this, I can't provide "perfect" universal instructions or professional documentation it's a hobbyist project that works great for me, and I hope it does for you too!