Introduction: Lego Ninjago Shurikens of Ice

About: I'm a geek, I'm a dad, and I make things

Coming off of the Sword of Fire:

and the Scythe of Quakes:

The next Lego Ninjago golden weapon I wanted to make was the Shurikens of Ice.

Also wanting to change the medium up a bit, and worried about the dangers of kids throwing wood shurikens at each other, I decided to make these out of foam.

Here's how I put them together:

Step 1: Materials

The materials I used for this project: (with affiliate links)

1/4" plywood -
EVA foam mat -
Gold spray paint -
Plastidip -

The tools I used for this project:

Scroll saw -
Miter saw -
Super glue -
Drill and 1/2" bit
Rotary tool -

Step 2: Trace an Outline

The first step was to find a reference picture for the shuriken and bring it into Inkscape. I used the pen tool to draw an outline around the shuriken, and then used the shape tool to adjust the outline to fit the curves of the shuriken.

Once I had the outline I scaled it to the size I wanted and printed it out.

Step 3: Marking a Template

Even though the shurikens are going to be made of foam, I wanted them to have some rigidity and weight to them. Being inspired by some kid-friends axes I saw, I wanted to use some plywood to help the shurikens keep their shape.

I cut out the outline of the shuriken, then took my 1/4" plywood and traced out 2 shurikens.

Step 4: Cutting the Plywood Shapes

I used the scroll saw to cut both the shapes out. Using a 1/2" drill bit I drilled a hole in the center of each of the shurikens and then cut out the center section of both.

Step 5: Cutting the Foam Shapes

Using the plywood shapes as a template, I traced 4 outlines onto the smooth side of the foam mat, and then used a knife to cut each piece out.

Step 6: Make an Oreo

After testing to make sure the the shapes I cut out all fit together correctly, I took the super glue and glued the plywood inbetween two pieces of foam - making one deadly looking Oreo.

Please note that this is not an actual Oreo, and would taste terrible if you try to eat it.

Step 7: Carve

Using a picture reference and the rotary tool, I started to carve out the designs and shape of the shuriken. Being my first time carving foam, this was a slow process full of trial and error, but if you have experience carving foam this should be a relatively easy step.

It is, however, very messy.

Step 8: Plastidip

Setting up a temporary spray station, I hung each of the shurikens and covered them in a couple layers of platidip - making sure to let them completely dry between each application.

The plastidip will help give an even coverage for when I spray the gold paint on, and will not let the foam absorb the paint.

Step 9: Make It Gold

The last step was to spray each of the shurikens gold. I ended up putting two layers of gold paint on each side, again letting each side dry completely before adding another layer.

After they were all dry, they were done and ready!

Step 10: Add Your Ninja Skills

Now that the Shurikens are done, all you need to do now is add some sweet sweet ninja skills, maybe a few sound effects, and you've got yourself a fun and safe gold weapon to add to your Ninjago collection!

Step 11: Watch the Video

Now you know how to build it, see it being made!

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