Ahh spring is in the air! Even though it's still officialy winter, we in southern Calif. have it nice in that February here is like spring in the rest of the country. Having said that, I love to be outside and start the gardening and upgrading/maintaining previous projects. Being a concrete artist, I like making new projects with concrete and have included two new tree ring segments for this instructable that I have made recently to enclose two new avocado trees. A prior instructable: http://www.instructables.com/id/How-To-Make-Concrete-Tree-Rings/
shows the complete process of making tree rings. Pictures of other art projects are included in the final step.
Step 1: Finished Products Look Like this:
I planted two new avocado trees and one lemon tree. I had rings in place for other trees that didn't make it, so needed to make new segments for the new trees.
Step 2: Gather Supplies and Get Started.
To make tree ring segments, you need concrete, forms, a few tools, water, mixing container, etc. Later on, I use a hotwire machine to cut my letters out of styrofoam, and then use glue to secure them in the form prior to pouring the concrete mixture.
Step 3: Form Making
Shown here is the form I used for my segments. Basically, it is made of wood, cut out of a piece of two by six for the sides, and a piece of plywood for the bottom. I made a template out of cardboard by making two arcs, one at 36 inches, and the other 4 inches narrower, or 32 inches. I divided a 36 inch circle into 6 equal parts and used that dimension for the length of the form. On the inside of the form, I cut some thin strips of softwood and made a wavy design on them, cut them out with the bandsaw and glued and nailed them into the sides of the form. Before pouring, the form is coated with a thin coat of oil, and I used regular cooking oil.