Our 3D printed enclosure fits a standard microphone with a diameter of 30mm – 34mm. Your microphone may be sized differently, so you'll want to measure the diameter of your microphone using a digital caliper. Since most microphones have are tapered, you should measure the top of the microphone and the center to determine how much area the top and bottom covers of the mic flag need to be.
We have created the parts in 123D Design in a way that allows you to customize the hole for the microphone. The three pieced design is setup so you can easily add a cylinder and cut it out of the two covers. The bottom and top covers are designed to snap tightly onto the frame. The frame has a cutout that fits the slide switch.
This part is were the circuits will reside. You'll notice this piece is has a smaller diameter and it has a pipe extruded on the edge of the cut out. This is so that the NeoPixel ring can rest on the pipe. The thickness of the pipe should be 1mm thick so that it can grip onto the NeoPixel Ring.
To add a new diameter to the cover, you can add a new cylinder object to the top of the existing cylinder. In the top file menu, under primitives select the cylinder icon. Move your mouse curser over the center of the existing cylinder, it should automatically snap to the center. Use the bottom options menu to change the diameter of the cylinder. The height of the cylinder should be at least 2mm (default 20mm is fine).
Combine + Subtract
You will need to subtract the cylinder to the cover so that it cuts the whole into the center. In the top file menu, select the combine icon and switch the option from Join to Subtract under the drop down menu. Select the bottom cover first, and then click on the cylinder second to highlight it. Press enter or click on an empty area on the grid to accept and confirm your cut out.
Save + Export
You can now save and export your parts as an STL file. You can find the export STL option under the 123D Design file menu and selecting export STL. We recommend printing each piece individually so that you minimize the changes of a failed print (If you print out a set and something goes wrong, all your pieces will go bad, and thats no bueno!). To save out each part out of 123D, you can temporally delete the parts and leave one to export the STL individually outside of the set. Just remember to undo (cmd/cntrl+Z that baby!) after the export. Repeat for each part. Now onto slicing!