How to Make a Linear Actuator




About: One to watch out for.

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.

It is very very cheap

Step 1: Go Get the Stuff

All you need is a glue stick

A servo modified for continuous rotation or a geared motor with high torque (i used servos as i could control theiir motion)

Step 2: The Attachment.

Strongly attach the Servo horn and the bottom of the glue stick(the end we rotate to get the glue out).

Attach it strongly enough (STRONGLY STRONGLY).

Step 3: Finished

Now enjoy the cheapest linear actuator.

The principle is that when the servo rotates, it rotates the bottom of the glue stick. Now we all know what happens when we rotate the glue sticks end, it comes up or down depending upon angle of rotation. Easy isnt it , you could make hundreds of these.




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    21 Discussions

    sujith john

    1 year ago

    Smart thought! super!

    would have been helpful if there was a video too. Anyways Great Work!!

    1 reply
    robobot3112sujith john

    Reply 1 year ago

    Yeah i will be adding a video, im just afraid to take apart my work-desk (i used it to push out a drawer), and it doesnt work as i fried a servo with the 3s lipo, but yes, ill try adding one ASAP.


    Reply 3 years ago on Introduction

    How can i lower the speed of motor?

    Also if i want the full control over motor what should be the steps?


    Reply 3 years ago on Introduction

    If you want full control over the actuator, attach a switch to the mobile part, then test it by integrating the switch. if you are still unhappy use a potentiometer to control the servo by using the knob example.


    Reply 4 years ago on Introduction

    I used them in my work area to open and close my box using an arduino. It can be used in a little slower speed requiring applications. You could also use to open drawers by increasing the part that comes up to a particular extent. The big advantage is that it is compact so it can be used in relatively small stuff