So I am working on a senior design project that is designing a holder for fiber-optic fibers at cryogenic temperatures. One approach we are considering for designing this is to use 3D printing. The key part is 8 X 6 X 3 mm. Along the 8 mm axis need to be 8 holes, arranged in two rows of 4. This design is attached. There are to be 4 parts. Each are identical except for the diameters of the holes. These diameters are as follows: 1.000 mm 0.755 mm 0.497 mm 0.230 mm These holes need to be circular and straight to a precision of 0.005 mm. Strength is also a necessity. If you, or the company you are familiar with, are capable of making these products, please let me know. NOTE: My team and I will provide the design. I am looking for nearby printing facilities in order to work back and forth, physically, with relative ease.