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By Lonny Grafman
Catching rainwater around the world
Get a paperback from Amazon or free digitally at tocatchtherain.org
  • Oct 15 Urban sustainability news: It looks like the pandemic is helping us to move our business into the streets - and killing the urban car along the way [1]
  • Sep 30 Climate news: Has the world started to take climate change fight seriously? [2]
  • Sep 25 California news: Global warming driving California wildfire trends say scientists [3]
  • Sep 22 China news: Climate change: China aims for 'carbon neutrality by 2060' [4]
  • Sep 21 Climate news: World's richest 1% cause double CO2 emissions of poorest 50%, says Oxfam [5]

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Fig 1: Finished Vermicomposting System.

I am very excited to be posting directions for building your very own home vermiculture bin! The methods employed will produce a bin appropriate for a household of 3-5 people and should last a number of years if constructed properly. There of course are many types of bin designs out there and I wanted the creative opportunity to design my own. In looking for ideas in a gardening magazine, I noticed a pentagon shaped planter for gardens whose shape I really liked. A pentagon is also practical because compost is less likely to get stuck in the corners as often happens in normal square shaped boxes, preventing the organic materials from cycling properly.

I decided to make a two-part stackable bin so that using the finished compost would be easier. Once the compost is processed it is easy to take off the top section, dump the compost in the garden, and put it on top to be filled again. The partitioned design is also improves aeration to speed up the composting process. Aeration is also provided by the holes drilled in the sides of the bin.

The bottom of each bin section is finished with wire mesh to keep the compost in place. The holes of the wire mesh are large enough to allow worms and microbes to enter the system and speed up decomposition. The top is simple plywood cut to size with a brass handle and L-brackets to keep the lid in place. The bin was lastly finished with natural organic linseed oil as a sealer for endurance in the elements and general durability.

I hope you enjoy!

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The Spring 2017 semester of ENGR215 Introduction to Design worked with Zane Middle School to design and build sustainable and educational infrastructure and apparatuses that supports K-8 STEAM education at their Eureka, CA location.

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Buckminster Fuller

All of humanity now has the option to "make it" successfully and sustainably, by virtue of our having minds, discovering principles and being able to employ these principles to do more with less.

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