Identifying Limestone

Identifying Limestone

I needed some limestone to work some cement experiments trying to replicate both the Portland cement patent, and to make slaked lime for mortar mix. This meant I had to be able to identify limestone.  Luckily since limestone is calcium…

Making Slaked Lime

Making Slaked Lime

Just like when talking to beekeepers, beer brewers, or any of a number of simple skills – the basics of what I am about to talk about are simple, but the chemistry rapidly gets complicated – but if you just…

Conduit Dome Part 5 Wire and Cement

Conduit Dome Part 5 Wire and Cement

This was the hardest part of the entire project so far – it was my first attempt at working with cement (other than using a couple bags of ready mix to set fence poles). To make matters worse, We were…

Conduit Dome Part 4 2v Door

Conduit Dome Part 4 2v Door

When figuring out the door I got the basic idea from my test build in my front yard, but when my Dad came to help me build the actual cement dome he brought a lifetime of construction experience that I…

Water Bottle Skylight

Water Bottle Skylight

I spend a lot of time looking at appropriate technologies coming from missionaries and other groups that work in third world countries. I figure – if it works in areas lacking infrastructure then it will work if we ever lose…

Conduit Dome Part 3 Assembly

Conduit Dome Part 3 Assembly

When I made my first dome I found the websites Mike’s Spacetime and Desert Domes to be the most help – Desert Domes in calculating the strut length and Mike’s Spacetime for his diagram of the struts assembled. He used…

Conduit Dome Part 2 Pipe Smashing

Conduit Dome Part 2 Pipe Smashing

There are many ways you can flatten the strut ends – hammer them, use a large shop vice (reportedly this is destructive to the vice) or use a hydraulic press. It took me so long to start this project, as…