diff --git a/writeup/1-EDM.md b/writeup/1-EDM.md index 0b4de11023e116d2317753dc7b4f6fe9bc440e11..5920025bbb3b2b408e92036a6c22c3cb7de1b528 100644 --- a/writeup/1-EDM.md +++ b/writeup/1-EDM.md @@ -6,11 +6,11 @@ I designed a simple finger pattern with varying width fingers and we tried to cu It was quite difficult to cut because the material is quite thin. We fixtured it the best we could across a corner of the base, but this still left a significant unsupported span that could be flexed easily by hand. - + When we tried to cut it, we found that the machine would cut, but the wire would always break after a few millimeters. We think this is because the water jet around the wire vibrated the copper plate, causing it to contact the wire and break it. - - + + It may be possible to eliminate the vibration by sandwitching the copper sheet between the sacrificial thicker plates of metal or slamping many copper sheets together, but a different fabrication technology is probably better suited to the task. \ No newline at end of file diff --git a/writeup/breaks.jpg b/writeup/breaks.jpg new file mode 100644 index 0000000000000000000000000000000000000000..314ef7c4990ebc5fc49ef31d97130e47d485b730 Binary files /dev/null and b/writeup/breaks.jpg differ