I recently refurbished and old Electro Voice 611 microphone. It has a ton of pitting and had been neglected for quite a while. After buffing and polishing it, it became clear that the black plastic enter portion of the mic that holds the microphone cartridge was falling apart. I scanned the back of the front piece of the mic and then traced it in Adobe Illustrator (you could use Inkscape as well). With the file I created I was able to laser cut new pieces out of red acrylic plastic.