41220
Made a parabolic microphone collector attachment for me head
set- Looked up the maths on Wikipedia http://en.wikipedia.org/wiki/Parabolic_microphone
- Made a model
- Printed it
- Tried it
Unfortunately it came out like poop. , I was having problems
with plastic not extruding , I tried raising the temperature to make the
plastic more runny but I obviously went too high. There where little bits of burnt plastic mixed
in everywhere. It was also printing faster than it was cooling. The supporting
plastic was moving round more and more the higher up it printed and the layers
got very messy. But in the end I had a plastic cup shape that was small enough to
screw to my mic and should focus sound.
I didn’t observe any real improvement in the end, thinking
it through the sound coming from my mouth [~ 6cm away] would not be very parallel
or focus correctly.
I chose PLA because it is stiffer and hopefully reflect sound better than ABS. Designing the model I found that open scad will cut objects made from extrusion when quick compiled but not when generating the stl.
