Kinematic Mirror Mount for Optics

Besides printing part you need.
3 pcs - [M4 Hex Socket Spring Ball Plunger 20mm](http://aliexpress.com/item/100PCS-M3-M4-M5-Hex-Socket-Spring-Ball-Plunger-Set-Screw-length-6mm-to-20mm/32788274338.html)
2 psc - [0.4 3 x 10 mm Stainless Steel coil extension spring with a hook](https://aliexpress.com/item/20pcs-0-3-4-60mm-Stainless-Steel-304-Small-coil-extension-spring-with-hook/32570564544.html)
5 psc - [M4 x 5mm Copper inserts Injection nut](https://https://ru.aliexpress.com/item/200PCS-M4-4-5-MM-Copper-inserts-Injection-nut-embedded-parts-copper-knurl-nut/32620856472.html)