Benn Jensen
More ideas from Benn
This type of chair was a build project for America's Boy Scouts since the 1930s, though they didn't design it. It's been referred to as a Camping Chair, a Bog Chair, an X-Chair, a Stargazer Chair, a Viking Chair, an African Chair—no one can agree on where the design first

This type of chair was a build project for America's Boy Scouts since the though they didn't design it. It's been referred to as a Camping Chair

Chemical reactions can have a powerful cleaning effect on metals.

Penny cleaning experiments are inexpensive science fair projects that allow you to test chemical reactions. You can use a few simple home ingredients to test the effects of acid as a cleaning agent.