- Joined
- Sep 6, 2011
One of the goal I have with my machines is to fabricate my own capsules for building microphones.
Some of the tolerances are in the few microns range.
For example, I need to make a shoulder .0015 high (in brass) +/- 5um.
In microphone capsules, exact dimensions are not that critical, +/- half a thou is perfectly viable,
but the spacing of the membrane ( 6um mylar with gold sputering) to the face of the backplate is EVERYTHING!
So how do I measure such small amounts, and how do I machine these.
In my projects, a 'skim cut' may very well be only a few micron thick!
Actually I doubt that I will succeed with the machines I am getting, but still, the questions remains valid and informative.
Some of the tolerances are in the few microns range.
For example, I need to make a shoulder .0015 high (in brass) +/- 5um.
In microphone capsules, exact dimensions are not that critical, +/- half a thou is perfectly viable,
but the spacing of the membrane ( 6um mylar with gold sputering) to the face of the backplate is EVERYTHING!
So how do I measure such small amounts, and how do I machine these.
In my projects, a 'skim cut' may very well be only a few micron thick!
Actually I doubt that I will succeed with the machines I am getting, but still, the questions remains valid and informative.