2020-03-18 (W) Electro Knife for Simulated Combat EleKSCo

I experimented with different doses of acetone, and I found that my prints shrunk based on how much acetone I used. On the left, there is an untreated model, the middle example received a low dose, and the rightmost piece got a substantial treatment. If I use acetone in the future, I will have to place the nut beforehand so it can shrink upon the metal, or print at a larger scale to account for the shrinkage.

Dangers of acetone vapor bathing

Now that I had a reliable switch adapter, I wanted to construct a working handle, so I gathered the parts and drilled into a segment of the black tube. Fortunately, the pipe that fit my voltage converter also accepted the 18650 battery holder.

Parts for a plastic handle

Before I did anything with the switch adapter, I wired everything together because I would not have access to the terminals after it was glued in place. Someone gave me advice about using E6000, where you apply a coat to each side, and when each side gets tacky, you press them together, like contact cement.

Adhering the switch and adapter

When I stuck the switch adapter to the pipe, I held it with rubber bands while it cured. I clamped the long wires off the voltage converter near each other and tested the circuit, which generated sparks.

Testing solder joints in a round handle

GitHub repo for EleKSco.
The rest of the posts for this project 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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2020-03-04