You guys seem sharp enough to be able to follow the pictures!

The hardest part is finding a spring that fits AROUND the metal shaft.
An aluminum shaft can be obtained at a glass supply or a metal shaft
in the isles of a big box hardware store. The shaft fits around the threaded rod.
PVC dimensions must fit inside each other. 3/4" cap inside 1 1/4" pipe work for us.


Also you have to fill the inner PVC cap with polyester body filler and drill through
the center so that it is solid.



Make the handle nice and smooth with countersunk nut.




Many variations can be tried, just keep the feed moist when "charging"
the blocker and ferment two weeks.




The EM1 (Effective Microorganisms®) and molasses are key for making it a floating feed.
Dry to 10%-20% moisture over two week period, the beneficial microbes boost usable protien
and nutrient assimilation.



MADE IN THE USA
A complete build out from off the shelf parts.
Note modification: added elbow for easy grip handle!




So easy even ski instructors can do it!
Made off the shelf parts and a few hours at Home Depot.




The technique is from the nursery where we use square blocks to maximize space and minimize
transplant shock. And no disposable plastic!




We now also manufacture horticultural square blockers in the Philippines for our farmers.
The ones made of zinc alloy in the UK are available at Peaceful Valley online.
http://www.groworganic.com/growing-s...l-blocker.html



One size fits in the next.




Use them for soil blocks and fish feed!



Use them for soil blocks and fish feed!