A neat way to join plywood at 90 degree angle

[Joe Hillmann]

Found this online, I think it is a neat idea that could have lots of uses

http://3.bp.blogspot.com/-kCEQ25zh9rg/T_9WHpJNgiI/AAAAAAAAFLo/UO_DHZpLewg/s320/DSC04449+%2528Custom%2529.JPG

Here is the blog I found it on.

msraynsford.blogspotdotcom/search?updated-max=2012-07-15T22:49:00%2B01:00&max-results=10&start=30&by-date=false

[Dan Hintz]

Looking through his older posts he shows some more options... I believe a link was posted about a year ago with those options and more.