DIY Linear Actuator: I want a linear actuator, or maybe a series of them, to open and close ventilation openings in my greenhouse. Although I could buy linear actuators from EBay, I decided to have a go at making my own.

Linear actuators are machines that convert rotation or any motion into a push or a pull motion. Here I am going to teach you how to make an electric linear actuator using household and hobby objects.

Making a Powerful Linear Actuator: I looked at buying a Linear actuator but they are too expensive for the project i wanted to do so I thought i would make one and document it for Instructables so that others can follow what i do for their project or impr