DIY Rotary Cutter From Old Metal Bottle Caps




About: Hello friends we are Abhay and Akshay of Meerut,India.We are twin brothers from india.We publish random instructables each fortnight.We like physical topics like electricity and magnetism.. We also love robo...

Hello Guys!

Nice to see you all after a long time...

Welcome to our newest DIY...

And this time we are going to make A DIY Rotary Cutter from old metal soda bottle caps...

Trailer : [Play Video]

So, let's get started...


Step 1: Watch the Video

Full Instruction Video : [Play Video]

Step 2: Materials Required...

So, the materials required for this build are :

  • A pair of pliers
  • A fast and powerful motor
  • Some bottle caps
  • A screw and a sprocket
  • Super glue
  • A screwdriver
  • A hammer
  • Some wires
  • A soldering machine
  • A pair of Scissors

So let's start making this awesome rotary cutter.

Step 3: Flatten Up the Soda Caps...

First of all we will use the pliers and hammer to flatten up the soda caps....

They should be perfectly straight or else it will affect the performance of this tool...

This step will take time so patiently beat them using a hammer until they are straight...

Step 4: Fitting the Screw and Sprocket...

Use a nail and a hammer to punch a hole in the center of a soda cap and fix the screw in it using some super glue...

Also fit the sprocket to the shaft of the motor...

Also use scissors and cut some grooves in the cap for more strength...

These components should be perpendicular to the cap and motor respectively...

Step 5: Wind Up the Screw...

Now just fix the screw in the sprocket...

And attach two wires to the motor...

And here, we have completed it...

Step 6: Testing...

Now just hook it up to a 12v power adapter and test it...

Ours was able to cut Popsicle sticks, PCB ,cardboard, plastic pens, thin metal sheets and many more things...

Step 7: Connect to Us...

Don't forget to check us on social media...

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Also you can express your views on this ible and our channel by posting your comments below this step...

We welcome all your support and feedback...

Check back next week for more DIYs!

Happy DIYing!



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    8 Discussions


    3 years ago

    Purchase a nut and bolt about equal in size to the Dremel shank. Drill a hole through center of cap.and tighten onto end of bolt. Grind bolt until it fits into chuck like Dremel shank. This should prevent cap wheel from flying off and injuring a finger or other body part.


    3 years ago

    man its scary...the dremel tool is cheaper anyone can afford it...not trying this nonsense & loosing a thumb or eye..tks fr the heads up kreator.

    1 reply

    Reply 3 years ago

    indeed. like i said in my first comment. i made this myself 12 years ago and ended up splitting my thumb open. I totally agree with you on buying a dremel for safety.


    Reply 3 years ago

    What you meant say, and I agree with you, is that it's not worth saving a little money to buy a proper tool, such as a Dremel, when you might lose use of a finger or an eye by using this dangerous device. Clarity counts.


    Reply 3 years ago

    Use it inside a glass tube with gloves so that if the cutter comes off, it in safely contained and deos not fly off and hit you.


    Reply 3 years ago

    the best is to get a pvc pipe with more or less the diameter of the motor and fit it in it so it works like a handle .


    3 years ago

    I split my thumb open using that when it bounced off a piece of wood i was cutting. .6 stitches 12 years ago.still hurts..