How can i wake a Launch pod for a Co2 dragster?

I believe the device that punctures the co2 is called a starter box. I can’t seem to find plans for them anywhere online. Just ask the teacher at school if you can have the one you are using there, or maybe ask them to help you make one. To build a device, you would need to have a mechanism with enough force & with a sharp point (like a pin/nail) at the end, to puncture the co2 cartridge.