2020-04-17 (F) Weekly Summary

Some of the folks in the knife making group plan to copy my design, so I wanted to make them a set of instructions that would be easy to follow. Over a couple of days, I collected pictures and wrote roughly 2,250 words for the instructions.

I picked Hackaday.io for the venue since I didn't want to share it on Instructables because their general feeling is not in line with fighting tools. The format for HaD.io is more open, but there is an Instructions area, so I organized that as best I could.

When I finished these instructions, I closed the door on my electric knife project and called it a success.
Full instructions in a teeny tiny image

Even though the electric knife and the instructions complete, I wanted to make some more entertaining weapons for the exhibition matches and to demonstrate what folks could make on their own. I made the sword, an electric ninjato, from the same pipe as the electric knife handles. I formed the blade by heating the plastic and compressing it between two blocks of wood to cool. The electronics were the same as the knives.
Electrified sword

For the first time in a while, I worked on a project that wasn't building electronics or weaponry. This time, it was a specialized key. I found the key and lock inside an industrial control panel at work, and it was so simple that I made the model on a break, and printed it at home. Also, it totally worked!
Square key model

Another project I enjoyed was a way to find the 2/9ths locations on an arbitrarily long segment. This measurement is useful for instrument making, particularly tubes and bars, like a glockenspiel or tubular bells. The function comes from being able to take a scrap of metal, like steel from the hardware store, cut it to any length, and find where to mount it and have it resonate cleanly. As I worked, this project evolved into a methodology for taking an idea, starting with overly-complex inventions, and whittling it down to a simple but useful device.
2/9ths diagram

The rest of the summary posts have been arranged by date.

First time here?

Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6

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