Foldable Chair / Step Stool — Easy to Store & Lightweight

Today I’m going to show you how to make a foldable chair that is compact, lightweight, and very practical. 🚗✨

It folds flat for storage, making it perfect for keeping in your car, van, wardrobe, or even taking with you to a picnic.

You can use it in multiple ways:

1. 🧺 Sit on it during outdoor activities or camping
2. 🏠 Use it at home as a small step to reach higher places
3. 🚙 Keep it in your vehicle for emergencies or convenience

Despite being lightweight, it’s surprisingly strong, I tested it by sitting and standing on it (80 kg load) and it works perfectly. ✅

Recommended Print Settings ⚙️

For best results:

1. Material: PETG
2. Layer height: 0.3 mm (Z = 0.3)
3. Perimeters/Walls: 3 perimeters minimum
4. Infill: 20–30% (grid or gyroid works well)
5. Supports: Enabled
6. Bed adhesion: Optional (brim recommended for large parts)

PETG is suggested because it provides:

1. Better layer bonding 💪
2. Slight flexibility (important for hinges)
3. Higher durability compared to PLA

1. 3D printer
2. PETG filament (recommended for strength and flexibility)
3. Fixer pins (printed parts)
4. Supports enabled in slicer
5. Basic sanding tools (optional, for smoother fitting)

In the first step, we need to print 2× BIG Side L parts with supports enabled.

In this step, we need to print 2× BIG Side R parts with supports enabled.

In this step, we need to print 2× TOP Half parts Without Supports.

In this step, we need to print 2× Small Side LL parts with supports enabled.

In this step, we need to print 2× Small Side LR parts with supports enabled.

In this step, we need to print 2× Small Side RL parts with supports enabled.

In this step, we need to print 2× Small Side RR parts with supports enabled.

In this step, we need to print 2× BIG Side UP parts with supports enabled.

In this step, we need to print 4× Fixers parts without supports.

First, put together the Chair TOP Halves in the opposite way so they align correctly for the hinges.

Check that the parts fit snugly before moving to the next step.

Build together the parts of the BIG Side like a puzzle 🧩.

Be careful with the position of the hinges to ensure smooth folding later.

Build together the parts of the Small Side like a puzzle 🧩.

Pay close attention to the position of the hinges for proper folding.

Fix both BIG Sides and both Small Sides together using the Fixers 🔩.

⚠️ Important: Test that all parts fit perfectly before inserting the fixers.

Each fixer can only be hammered in once, you cannot take them apart afterward.

Put all parts together at the hinges.

The last hinges should align carefully.

✅ Test Folding:

1. Fold the chair:
2. Top side lifts slightly ⬆️
3. Small side folds inward ↩️
4. Both sides reach full folding position
5. Unfold the chair by reversing the steps 🔄

Make sure the movement is smooth and nothing blocks the hinges.

Here is the 3D printed Foldable Chair / Step Stool lightweight, easy to store, and ready to use! 🪑✨

1. Folds flat for storage 📦
2. Perfect for home, picnic, or vehicle use 🚗🏠
3. Strong PETG construction, tested up to 80 kg ✅

Enjoy your new portable chair! 😄