Oldest daughter is making a mousetrap race car for a science project. She came home with a list of needed supplies. After several phone calls, she located a place that sells 4mm metal rods. These will be used to hold on the wheels, suspend them, or connect them. Something.
She also has to have string, washers that fit on the 4mm metal rod and eye hole screws. Her science partner is getting the rest of the supplies, which includes the mousetrap.
They’ll be working on it after school two days a week. It’s due in two and a half weeks.