These are figures are made with salt on this rig.
I have seen many ways I could build my own DIY vibrating Chladni plates (Cymatics) but I was generally frustrated by the fact that one would generally have to sacrifice a speaker in the process, and I would need to have a super powerful sound amplifier. I wanted to
- work with cheap off the shelf components
- use as much of my own kit as possible (my conventional audio amplifier etc.)
- avoid destroying the speaker
- use a plastic membrane that is cheaper and requires less power (less noise for my neighbours)
Sugru is ideal for this project because:
- It provides a great acoustic contact that bonds to plastic sheet, board, metal, glass
- creates a perfect seal between the speaker and the plate
- you have time to make the whole set-up level before the sugru cures
- can also create custom-made dampening pads for the contact with the table the rig sits on.
- I don't need to destroy my nice speaker since I can cut sugru and re-use my speaker once the experiment is done
If you need to stock up on sugru, you can buy it here and also from the Instructables store.
I recommend this instructable especially for educators as it makes a great intuitive and hands-on introduction to acoustic with exciting experiments but without spending too much.
Going with this instructables, you can find classes that will teach you general concepts of standing waves, cancellation and many other phenomena.
- the physics Classroom
- UCLA acoustic
This instructable has been made by Cesar Harada at TechShop SF for Sugru
So lets get started!