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How to Make Finn's Golden Sword of Battle Mathematical!


Shmow-zow! Do you know what time it is? It's Adventure Time here and every day at StormTheCastle.com!

We had tons of fun making one of the many swords from Adventure Time this past week, and we're excited to share it with you. We happily present:

Finn's Golden Sword of Battle!


Finn's Golden sword

Finn's Golden Sword of Battle

You Will Need:

  • Our template (download the pdf here)
  • A soft (2B) pencil
  • A ruler
  • An eraser
  • Three sheets of foam board
  • Yellow acrylic paint
  • Black acrylic paint
  • Dark blue or navy blue acrylic paint
  • A brown marker and brown acrylic paint
  • Red cellophane or paint (cellophane is recommended)
  • Pieces of leather or dark grey fabric (about a 6x 6" square)
  • A hot glue gun
  • Fine grit sand paper
  • An X-acto knife
  • Paint brushes (both fine & flat tip)
  • Painter's tape (to secure your template to the foam board-- we don't want it to slide around!)
  • A pair of scissors

Note from Will: The Template and the tutorial are both absolutely free! But would you consider a donation of $1 to support my work? Paypal makes it very easy and safe. Click here to donate $1 - Every little bit helps Will to keep making great tutorials and templates. Thanks!



The templatePrint out the template, cut out the pieces for SIDE 1, and place them on your first sheet of foam board, tape them down with painter's tape for added security

Grab your soft pencil and begin to trace the shape of the sword onto the foam

Once finished, grab a ruler and draw a completely straight line from one tip of the blade to the base of the hilt, then add in the details on either side of the blade, and the hilt as well. This is going to be the face of the sword, so it's important to capture all of these details as best you can.










Transfer onto foam board 

Once you're done transferring the image onto your board, it should look a lot like this.














Cut it out 

Next, grab your X-acto knife and cut it out.

Once this shape is cut out, trace the same shape on 2 more pieces of foam board and cut them out.





Glue it together

Once all three shapes are cut out, it's time to glue everything together. Heat up your glue gun and get ready to assemble, making sure to stack the pieces as perfectly as possible (so everything lines up pretty much identically).









Use sand paper

Now that everything is glued together, sand down the edges making sure to smooth out any rough patches, trying to make the foam itself soft around the edges (this minimizes the likelihood of getting a rather painful cardstock paper cut and takes away any stray paper lint that will get in the way when you're painting. Make sure to sand in the depressions where the sword is cracked.

We're using p120 grit sandpaper. It's very, very fine.

Now that your sword is glued together and smoothed out, it's time to flip it over and draw the inverted details on the other side. To do this, grab the template and flip it over, tracing the image with your 2B pencil. Next turn it over to the printed side and do the same, making sure to really press the graphite down hard. Now, line the template up with your sword, face down (so that the printed front is touching the board) and trace it, applying as much pressure as you can while doing so. When you're done, you should have a ghost image of the sword's details on the foam board. Remove the template and darken the detail lines with the pencil. Take your ruler and make sure the center line from tip to hilt is straight. This is just one option for accuracy. If you're comfortable doing this part free hand then don't hesitate!


Darken the linesOnce all the details are done, both sides should look a lot like this.

Take another few moments to darken all pencil lines on the entire sword on both sides. When you're finished, it's time to move onto the next step.








NextOkay! We're done making it! Now let's paint it and add the details!


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