25mm Long 20mm Diameter. Now 5mm AND 0.25" (6.35mm) Bore files. I designed this for a light duty Z-Axis Nema 11 stepper (28BYG501) for a CNC engraver I am building.
I rounded all sharp edges for a professional appearance and to eliminate stress risers that could lead to cracks. Let me know if I missed any edges.
UPDATE - 3/3/2012: I added 3 new versions with a 1.5 turn helix cut. Mouse over file name and look for ones with 1pt5 at the end. Hopefully more robust. The originals were modeled after an aluminum one I had and I didn't account for the obvious material differences.
| Flex_Coupling_25mm_Long_20mm_Wide_0pt25inch_6pt35mm_bore.stl | 11.0MB | |
| Flex_Coupling_25mm_Long_20mm_Wide_5mm_AND_6pt35mm_bore_1pt5_turns.stl | 7.6MB | |
| Flex_Coupling_25mm_Long_20mm_Wide_5mm_bore.stl | 10.1MB | |
| Flex_Coupling_25mm_Long_20mm_Wide_5mm_bore.stp | 948.9KB | |
| Flex_Coupling_25mm_Long_20mm_Wide_5mm_bore_1pt5_turns.stl | 8.3MB | |
| Flex_Coupling_25mm_Long_25mm_Wide_5mm_AND_9pt5255bore.stl | 11.2MB | |
| Flex_Coupling_25mm_Long_25mm_Wide_5mm_AND_9pt5255bore_1pt5_turns.stl | 4.2MB |
