Up to the 4th Course

The method Each complete layer of logs (made up of all the logs that are on the same level) is called a “course”. The logs are oriented in alternating pin-wheel courses- and by pinwheel, I mean at each corner, one end of each log “passes” a log that is “butted” up againstĀ  it. On the next course, you reverse the butts and passes at that same corner, and on and on. Each log is pinned with rebar to the layer below- every 2 feet. I won’t bore you with too many of the details, but it is a lot of … Continue reading Up to the 4th Course

How to make your own triple blocks for less than $45

Why a triple block? Why not a double? or a single? Because two triple blocks working together gives you a 7:1 mechanical advantage- 5,000 lb log requires only ~720 lbs of force to lift. And you can use just 5/8″ thick rope to lift 720 lbs. A double block would only reduce the force down to 1,250 lb. But you have to double that- for each end of the log. And a single……ummmmm…..there’s no mechanical advantage to a single. Stop talking about single pulleys. On the other end, a “quadruple” block doesn’t really exist beyond huge construction cranes with wire … Continue reading How to make your own triple blocks for less than $45