gentlevoice1
Well-known member
Hey DIY'ers,
I'm in the process of making a couple of electrostatic headphones and to that end have drawn up a drawing of one of the stators (please see attachment) - I hope it's clear how it is made ... The outer frame is an ellipse and the cross-section of the rods inside the stator also are ellipses that go from one side to the other of the outer frame.
It's not entirely completed since there needs to be holes/threads to assemble the stators, as well as fixtures to fix the stators to a surrounding headphone frame. The "S" like shape may also not be the final shape: The point of it is to "stiffen" the stator rods in a non-linear way - it probably will be replaced by small "bridges" that go between the rods - but in a similar way in that these bridges will also "sink into" the rod structure. Hope you can how this may be done ...
I'm not quite sure, however, how this is best made in practice so before drawing any more I hope for your insights ... I'm considering having the stator 3D printed on a precision 3D printer (a Projet with 0.025 - 0.05 mm accuracy) and then after this molding (or maybe it's called casting?) the stators with a lost wax process using copper for the frame & rods (I'll make sure the copper cannot oxidize during the process).
I wonder, though, if there's a more feasible way to do this?
Any insights appreciated ;-)
Jesper
P.S.: the dimensions are ~111mm high, 73 mm wide & the frame is 3 mm thick on the thickest place. The rods are 1.5 * 2 mm ovals.
I'm in the process of making a couple of electrostatic headphones and to that end have drawn up a drawing of one of the stators (please see attachment) - I hope it's clear how it is made ... The outer frame is an ellipse and the cross-section of the rods inside the stator also are ellipses that go from one side to the other of the outer frame.
It's not entirely completed since there needs to be holes/threads to assemble the stators, as well as fixtures to fix the stators to a surrounding headphone frame. The "S" like shape may also not be the final shape: The point of it is to "stiffen" the stator rods in a non-linear way - it probably will be replaced by small "bridges" that go between the rods - but in a similar way in that these bridges will also "sink into" the rod structure. Hope you can how this may be done ...
I'm not quite sure, however, how this is best made in practice so before drawing any more I hope for your insights ... I'm considering having the stator 3D printed on a precision 3D printer (a Projet with 0.025 - 0.05 mm accuracy) and then after this molding (or maybe it's called casting?) the stators with a lost wax process using copper for the frame & rods (I'll make sure the copper cannot oxidize during the process).
I wonder, though, if there's a more feasible way to do this?
Any insights appreciated ;-)
Jesper
P.S.: the dimensions are ~111mm high, 73 mm wide & the frame is 3 mm thick on the thickest place. The rods are 1.5 * 2 mm ovals.