Recycling post, Planter Pyramid

Spotted on the internet, a project that doesn't use nails, but slots to hold the slats in place.
Make it easy, cut along the pallet, only having to battle it out with the centre nails. There is a way of lining all the wood slats up, for just a few cuts with a circular saw. Angle of the saw is 30degrees, the angle of the cut on the wood is 36 degrees.
Ask for more info.
http://www.houzz.com.au/photos/1332497/pyramid-garden-planters-raised-vegetable-planters-outdoor-pots-and-planters

With a barrow, thinking the pyramid looks better.

Will have to try a Livingston daisy next time, to have a flower pyramid.