Tell us about yourself!
Not really. All were taken with my phone camera, any edits were cropping.
I agree. I made this up on the fly after I thought about how hard the traditional way of a grid of strings would be. Many improvements could be made!
The spiral gave me 3/4" over 20 feet. (We rarely get heavy rain in Colorado). Sighting where I was was approximate, but in retrospect I could have marked out where each quarter turn of the tamper should occur.The tamper has a broad base and sits pretty flat on the ground after a few good thumps. It dangles like a pendulum until it hits.The local unevenness of the ground ended up about 1/16", if I dug too deep in a spot I would rake in some loose dirt and tamp again. If I couldn't tamp to the right depth I would dig a bit more.
I did that for an earlier project, a hot tub base. It was not very fast. I had to wait for the water to settle every time I moved it. Using the laser level I could see where I was in real time as I slammed the tamper down.
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