Costume Musings

Magma Lux Shoulder Armour using L200 and LED Foam

Tutorial by: Puppichu Cosplay

In this tutorial I’ll go over how to make Magma Lux’s shoulder armour from League of Legends. This armour piece will feature animated LED lights, and also be separable for travel.

Remember to always use proper safety equipment such as safety glasses, respirators, gloves, ear protection, ventilation, and cutting mats while following this tutorial. Also remember to ask for supervision if you are a younger reader. Cosplay can be a fun hobby, but make sure you are safe first!

Pattern:
Print this pattern on a 8.5” x 11” sheet of paper
PDF – Magma Lux Shoulder Pattern 1
PDF – Magma Lux Shoulder Pattern 2

Shoulder Materials
¼” L200 foam
¼” LED foam
Foam Clay & mod podge
16 gauge wire/clothes hanger wire
Painter’s tape
Airbrush with Red/Yellow/Black/Dark Purple Acrylic paint
Hot glue gun & glue sticks
Heat gun
Exacto knife
Marker or pen

Electronics
TEXT – Magma Lux Shoulder Armour LED Code
LED NeoPixel Strip lighting
Solder iron and solder
Wire
3 pin JST connectors
Arduino Nano Microcontroller
Battery
Heat shrink

First, tape your pattern pieces together by lining up the colors and edges of paper.Then trace the patterns on your ¼” L200 and ¼” LED foam with your pen. If you need your pattern to stay put you can also push some pins through the pattern into the foam. Then cut your shoulder pattern out with a pair of scissors or an exacto knife. The pattern sheets will show where you will need to make mountain and valley cuts. When cutting an edge mountain piece you want to make a 45 degree cut into the pattern piece you are cutting. For the valley, you cut the opposite direction (45 cut away from the pattern piece). For the cuts in the middle of the foam pieces, mark with your pen where the cut will be. Use your exacto knife to cut at a 45 degree angle halfway through the foam. Do this to both sides of the line. This will take a triangular piece of foam out, without cutting all the way through the foam. For mountain cuts, take the foam out from the backside of the foam. For Valley cuts, take the foam out from the top side of the foam. Then flip your patterns to make the opposite shoulder. You must flip the patterns or the angled cuts will be backwards for the other side!

Take your L200 and LED foam pieces and glue them together by matching the color guides. Then glue the remaining front L200 foam pieces together, and the remaining back L200 pieces. By having the front and back in two seperate pieces it will be easier to install the LEDs.

Electronics:

In this tutorial I will not be going over the basic theory behind Ohm’s law. If you want to learn this information yourself I suggest you check out Kamui Cosplay’s books on LED lights or head over to the Adafruit webpage. You will need a firm grasp of these concepts before starting this project. You can use whatever different lighting and resistor combinations you can find available to you, this is just what I used for my setup.

Here is a diagram of my circuit for the shoulder armour. When you create your circuit, use your JST connectors where you need to be able to disconnect your lights from each shoulder. This is so you can remove them more easily for travel/storage. Use hot glue to attach the strip lights to the inside of the L200 foam pieces. I applied my lights to the back side of the L200 foam that way there are a small distance away from the LED foam. This just makes the light diffuse a bit better. To attach the “floating” piece, hot glue a piece of wire that runs along the edge of the first point, goes out at the first corner, and then into the bottom of the “floating” piece.

Once your LEDs have been installed use your hot glue to glue the front and back sides together. You can also use some foam clay to fill in any holes or gaps that may be still showing after gluing. If you do use the foam clay you will want to coat you pieces with a sealant (I used mod podge for mine!). At this point you can also install some velcro onto your shoulders to stick your armour to your bodysuit.

Lastly, use your airbrush to first add a light layer of yellow onto the LED foam portions of the shoulders. Then use some red acrylic paint in your airbrush to gradually add some red gradient to this same spot. The edges will be more red, while the center will be yellow. Then paint the remaining L200 Foam piece with a mix of black and dark purple.

Congratulations! Your shoulder armour is now ready to be worn!


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