DIY Octahedron Montessori Baby Mobile (Detailed Tutorial)

The Octahedron baby mobile is the second visual mobile during infancy. This fun DIY project will save you money and will be a beautiful addition to your home environment and your baby’s movement area. I also have a video tutorial for the Octahedron mobile on my YouTube channel, if you are more of a visual learner!

What you will need




PHAse 1: Construction of the Octahedrons

  1. Gather all of your supplies and print off three copies of the Octahedron PDF template.

2. Use spray adhesive to stick the octahedron paper templates to the back side of the shiny paper. Do this in a well-ventilated area.

Three pieces of paper. On one side you can see a template of an octahedron made out of equilateral triangles.

3. Cut out the octahedron along the outside edge. Go slowly and carefully, taking your time around the corners.Keep all tabs intact as this is how you will assemble your octahedrons.

Three cut out octahedrons and a pair of scissors.

4. Fold the octahedron inward along all of the lines. You can use the bone folder to score the paper along all solid black lines to make the folding easier. Alternatively, you could use any straight edge to score the paper. Make strong, crisp folds. This will help when assembling the octahedron together.

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5. Next, tie a fishing knot to secure the clear string to the paper clips. Use about 1-foot-long pieces of string, you can always trim them later. Tie string to 3 paper clips.

Note: The paper clips will be inside each octahedron to allow them to be hung to the wooden dowels.

How to tie a fishing knot

  1. Thread one string through the paper clip
  2. Twist the string together. You can do this easily by holding the string together and twisting the paperclip. Twist 5 to 6 times.
  3. Take the short end of the string and thread it back through the hole that was formed by the base of the paperclip. Then thread it back through the new larger hole you just created.
  4. Pull the short tail tight to secure the knot along the paperclip.
  5. Trip excess string close to the knot.

6. Next, we will assemble the octahedron using a hot glue gun. Be careful when gluing so as not to burn yourself. When gluing, you want to glue and secure tabs in an order that leaves you with two tabs left to glue which will secure the last side of the octahedron. This will allow you to put the paperclip in place and secure the octahedron easily.

7. Assemble all three octahedrons with hot glue. Make sure to secure the paperclip in place before sealing the octahedron closed.

Three octahedrons assembled and sitting on a table.

Phase Two: Assembling the Mobile onto Wooden dowels

8. Get two wooden dowels, clear string, and scissors ready to assemble to mobile.

Note: when securing the mobile pieces to the dowels, don’t secure your knots so tight that they can’t move. The knots should be able to slide along the wooden dowels. This is important when it is time to balance your mobile at the end. Every mobile will look slightly differnet as the weight of the materials will vary slightly.

I used 12-inch craft wooden dowels, however, you could make this work with different-length dowels, you will just have to balance the octahedrons accordingly.

9. Find the middle of dowel B, for me, this was 6 inches in from the end.

10. Cut string about 8 to 10 inches long. Tie a fishing knot to secure the string to dowel B This string will attach to dowel A.

Close-up of wooden dowel with a clear knot tied to it.

11. Secure the red and yellow (gold) octahedrons to dowel B. Tie fishing knots with the string coming out of the octahedron about 1 inch from the end of the wooden dowel. Hang the octahedrons about 6 inches from the wooden dowel. Try to make them the same distance from the wooden dowel.

A wooden dowel, then a tape measure showing 6 inches. The top of an octahedron lining up at the 6-inch mark.

12. Next, tie an 8-12 inch string to dowel A in the center of the dowel. This will be the string that helps to hang the mobile.

13. With the string you just tied to dowel A, take the other end of that string and attach it to either a paper clip or a small (or large in my case) ring. This is what will allow you to hang your octahedron mobile.

A metal ring with a clear string knot tied.

14. Tie the string from dowel A to dowel B which currently has nothing on it. The distance between the two dowels should be about 3 inches.

The layout of the octahedron mobile. 2 wooden dowels and three octahedrons. The top dowel has an octahedron off the right side. That dowel is going to be attached to the second dowel which has two octahedrons secured to it on either end.

15. Once dowel A(top dowel) is attached to dowel B(bottom dowel), then attach the blue octahedron to dowel A. The blue octahedron should hang slightly above the red and yellow octahedrons. However, you can hang it based on what you think looks best.

Balancing the Mobile

Once all octahedrons are secure, work to balance your mobile. First, start by balancing the blue octahedron to dowel B. Once that is balanced, then you can make the red and yellow (gold) octahedrons balanced.

Be patient as this can be very tedious. It may be helpful to have another person help hold the mobile while you balance it. You could also set it up on a mobile hanger while you balance the mobile.

Tighten knots and trim strings as needed. Give yourself a pat on the back for completing a beautiful octahedron mobile!

A plant hanger on the wall hanging the octahedron mobile from a metal ring.

Frequently Asked Questions

What is a Montessori mobile?

A Montessori mobile is a creation of various objects of interest that are suspended in the air for your baby to look at while alert and awake. They are able to move freely and offer something interesting and captivating for your baby to look at. There are traditionally 4 Montessori mobiles that offer various levels of complexity and elements for an infant. This DIY tutorial will show you how to make the second mobile in the visual series, the Octahedron mobile.

When should I start using the Octaherdon mobile?

The Octahedron mobile can be used around 5 weeks of age. It is the second visual mobile. The first is the Munari mobile. Check out this blog post for a DIY Munari Mobile.

How do I hang my Octaherdon mobile?

You can hang mobiles from a floor mobile hanger. Alternatively, you could anchor a hook in the ceiling, hang a long ribbon down, and then connect the mobiles closer to your baby’s level. Another way you could hang your mobile is to use a wind chime hanger that juts out from the wall, which would allow you to hang the mobile from it and still have it move freely.

The mobile should hang about 12 inches above your baby’s face when they are lying on their back looking at the mobile.

How do I store my mobile when I’m not using it?

I found it best to store all of my mobiles in a plastic storage container. Place tissue paper between each mobile so they don’t get tangled up with each other. You could also hang them on the wall and use them as room decore, they are just that beautiful!

What Montessori mobile do I use next with my baby?

The next Montessori mobile in the sequence is the Gobbi mobile. The Gobbi mobile is a beautiful creation of 5 spheres hanging from one dowel in descending order at a 45-degree angle.

A mobile with 5 small balls covered with embroidery string at a 45 degree descending angle.

Where do I set up a Montessori mobile in my home?

You can set up your mobiles in a Montessori movement area. A movement area has three essentials, check out this blog post to prepare your own movement area in your home.

blanket on the floor with a horizontal mirror, a wooden mobile hanging and a black and white contrast mobile hagnign.
Montessori Movement Area with Munari Mobile

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