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Paul and Josiah round off their discussion of the construction and design of the berm-shed.

They discuss the development a new type of angle brace known as a kicker, and Fred's construction of a gin pole mounted on a tractor bucket to help them lift logs. They imagine that their dream team of builders would prefer to use manual labour or electric tools over diesel, and discuss the benefits of an electric chainsaw, though acknowledge that their electric tractor wasn't too successful. Paul dreams of electric excavators.

They move on to discuss refinements in the ash, borax and DE mix for use in the post holes, the evolution of the notches in the joinery, and improved lithium batteries which could maybe power a winch. Successive earth ramps were built for the tractor to reach the top of the berm-shed, re-using the earth each time. The importance of wide eaves was again emphasised. Paul wants to source a planer attachment for the tip of a chainsaw which would make cutting joints much easier.

Overall they are happy with the berm-shed and hopeful that the lessons learned will mean that the fifth wofati will only take a month as methods become optimised. The lab is colder and less muddy than base-camp. They discuss snow and note that the failure of the berm-shed took place during summer and was not due to snow load. They conjecture that a new build could take four times as much snow, but that's just wild ass speculation.

Relevant Threads

berm sheds
the first wofati - allerton abbey
Jen's boot camp and allerton abbey experience
Josiah's bootcamp log
wofati and earth berm forum

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Paul wants to source a planer attachment for the tip of a chainsaw which would make cutting joints much easier.  

Hey Paul - guess what I found!  

It's a Log Wizard, to be found at logwizard.com

The blurb says

The Log Wizard® is a one-of-a-kind chainsaw attachment that turns your chainsaw into an amazing new tool. The Log Wizard® gives you the freedom of time and the value of creation. Simply attach the Log Wizard® to any saw and it springs into action as a debarker, planer, jointer, notcher, or post sharpener. The Log Wizard® is fitted with two 3-1/4" planer blades to give a wide cutting surface on the log. These blades can be sharpened several times or replaced with readily available replacement blades. The Log Wizards® unique single drum design allows for the easiest blade transfer possible, saving you time and money.


Attaches easily to most 65cc or smaller chainsaws
All ball bearing construction for long life and durability
Make notches or debark poles for barns, fences, bridges, log home construction, and more
Installs in less than 10 minutes

One minute demo

Five minute demo

Another demo, not by the manufacturer this time

Seems to be available from amazon.com for $180.

Hope this helps!
Permaculture is a more symbiotic relationship with nature so this tiny ad can be even lazier
Permaculture Design Magazine
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