I need to make a chainsaw for my cosplay for saturday

I have craft foam and cardboard but am unsure where to start.

any ideas

thanks

the blade sounds easy but the handle i have no idea, good luck with it hope u can able to make it

have shaped the blade out of balsa wood.

gonna see if I can figure something out tonight for the rest of it, with a plastic box, craft foam and red insulation tape.

May visit Homebase tomorrow for chain and a drawer handle