[kghjr]

Had a couple of these things lying around. I never figured out what plants have shallow roots and killed everything I planted in them.



Made an OCD positioning grid out of 200 lb kite string on the back side. MCMasters-Carr bolts, washers, nuts, inserts, M20 tap, 30mm bit



First try determined that insert hole measurements cannot be eyeballed, must use ruler and protractor.



Eyeballed dead center by accident.