IKEA Billy Expandable Riser-One Shelf in One Print

Double every shelf in your IKEA Billy bookcase. A sliding, telescoping riser that adjusts from 24–43 cm wide — two risers print side-by-side on a single Bambu P2S plate, so one 8-hour print covers an entire Billy shelf. No screws, no glue, no hardware. Just print, slide to fit, and stack a second row of manga, DVDs, Switch games, or books.

The Problem

IKEA Billy shelves are great, but the space between shelves is usually taller than what you're storing. Manga volumes, DVD cases, Blu-rays, Nintendo Switch game cases, and paperbacks all leave wasted vertical space above them. Shelf risers exist, but they're either fixed-width (never quite right) or require multiple prints.

The Solution

This expandable riser uses a simple telescoping slide mechanism to adjust its width from 24 cm to 43 cm — fitting any shelf configuration inside both the standard and deep Billy. No screws, no magnets, no glue. Just slide the two halves to your desired width and place it on the shelf.

⭐ What Makes This Different

Full Billy shelf in a single print. Plate 3 prints two 12 cm-deep risers side-by-side. One print ≈ 8h 20min → one complete shelf riser spanning the full Billy width. No other riser design on MakerWorld can do this.

Most shelf riser designs require multiple prints, post-processing, or hardware. This one comes off the build plate ready to use.

Three Print Profiles Included

Plate Depth Height Width Range Best For

Plate 1 18 cm 10 cm 24–43 cm Deep Billy (39 cm depth)

Plate 2 12 cm 10 cm 24–43 cm Standard Billy (28 cm depth)

Plate 3 12 cm × 2 10 cm 24–43 cm each Full standard Billy shelf in one print

Features

- Expandable width — Telescoping slide mechanism adjusts from 24 to 43 cm to fit any shelf divider configuration - Full shelf in one print — Plate 3 gives you two risers on a single build plate, covering the full width of a Billy shelf - Zero hardware — No screws, magnets, or glue required; purely 3D printed - Two Billy variants — 18 cm deep version for the deep Billy, 12 cm deep version for the standard Billy - Lightweight & efficient — Prints with just 2 walls and 10% infill - Sturdy enough for books — Tested with a full row of books Perfect For

- 📚 Manga & comic collections - 📀 DVDs & Blu-ray cases - 🎮 Nintendo Switch game cases - 📖 Paperbacks & small hardcovers - 💿 CD collections - 🗂️ Any small items that waste vertical shelf space Print Settings (included in profile)

- Printer: Bambu P2S (256 × 256 mm bed) - Material: PLA - Walls: 2 - Infill: 10% - Print time: ~8h 20min for Plate 3 (full shelf), less for Plates 1 & 2 How It Works

- Choose the plate that matches your Billy model (deep or standard) - Print — Plate 3 recommended for the fastest full-shelf result - Slide the two telescoping halves to match your shelf width - Place on the shelf and start stacking a second row No assembly, no tools, no fuss.

Compatibility

- IKEA Billy Bookcase (standard, 28 cm deep) - IKEA Billy Bookcase (deep, 39 cm deep) - Any bookcase with shelves between 24–43 cm wide and at least 12 cm deep