This instructable is to help you make the iron man 2 arc reactor prop.
List of materials needed: 1. Blue LEDs x24 (as you wish) 2. PVC pipe 3" with cover 3. Wires 4. Plastic covers (you can get from Pringles) 5. A4 paper 6. Plastic sheet (hard) 7. Glue 8. Metallic gray spray paint
Tools: 1. Xato knife 2. Nails (to make holes for LEDs on the plastic cover)
I would love to have feedbacks on the instructable I've made, so please do comment and feel free to ask questions. And correct me if there's any errors in this instructable.
This is the pattern that you will have on your arc reactor. First, draw some triangles and v-shapes on the plastic sheet and cut it off. You can use google searching perfect triangle. Careful with the cutting.