Samuel Stöckli

Film | Light

How to build a (improvised) centriphone

It’s very simple to build a centriphone. All the things you need to build a centriphone you’ll find at your home.

What you’ll need:

  • 2 PET-Bottles
  • 1 key ring
  • some cord (about 3 m)
  • an old phone case

STEP 1: BUILDING YOUR GRIP

01_centriphone

Take a hairdryer and heat up the plastic bottle. When it gets soft, compress the bottle until it looks like the bottle you see in the picture above.

02_centriphone

Now take your key ring and put it on the bottle until it is placed under the cap.

STEP 2: MAKING SOME KNOTS

03_centriphone

Take some cord and tie something like this. You’ll have to make some holes in the case, so you can slip the cord through. The center of gravity should be between the camera and middle of the case. Adjust it so you can’t see the knot on the camera.

For better results you also could use fishing line instead of normal cord.

STEP 3: ADDING A WING

04_centriphone

With the cord you stabilized 2 of the 3 axes. For the third one you have to add a wing. In my first construction we made a wing out of card stock. The bottle-wing worked better. It is also no problem if it gets wet from the snow.

Wing

 

Cut the bottle as shown above (cutting template on right panel). The parts A & B must be squeezed between cell phone and cases.

Lenghts:
1: approx. 3 cm
2: approx. 2 cm longer than the width of your phone

It’s recommendable to make some holes (“3”) at the end of the cut “2” so it doesn’t tear open.

 

STEP 4: SWINGING IT

For my video I used a Sony XPERIA Z3 compact. A big benefit is, that the phone is waterproof. For phones which are not waterproof I recommend a waterproof case.
For filming I activate the Touch lock-Feature because I didn’t want the phone to stop recording.

check out my centriphone-Videos

For the first video I used my rig with a card stock wing and no key ring.

In the improved version I replaced the card stock with a PET-bottle and added a key ring.

4 Comments

  1. Axel February 20, 2016

    Been looking forward to this! But I didn’t understand how you made the wing in step 3? Good job tho! /A

    • samuel February 20, 2016

      I added a cutting template to the post. Please report on your success in rebuilding it.

  2. Garrett April 19, 2016

    Could someone make a video of building this?

  3. Garry October 30, 2016

    Love it. Nice job.

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