Bonfire on Rockwool bats

We did a live test to figure out if Rockwool bats could be used to protect wood from a bonfire on top. 15 cm worked. But the cellulose in the bats made them burn and collapse early.

Flash Photo and electroMagnet Drop

I made a little setup with an electromagnet, a LED as "flash" and a remote trigger for my Canon camera. Using an Arduino as controller, I could control the timing og the release of the magnet and the shutter of the camera, to create images of stuff "

Underwater Lights

I have done underwater lights in many ways. Most fun was using oil filled jam jars and plastic bottles with 1000 W halogen tubes. My Instructable on Underwater Lights.

Water Kites

Like flying kites in the sky - but done in a river or stream. Multiple lines make the water kites steerable. I came up with this during a residency in Linz at the ship Eleonore. This is something that needs to be explored further in the future.   Some sketches from

Floating or Sinking

Building boats and experimenting with buoyancy and ship stability. I made a little "kit" from acrylic plates, to have kids do easy experiments with various boat shapes. Taping the sheets of acrylic together made for quick changes of design.