My Customized Flexible Coupling param. with 2 different inner holes and speretae spring parameter

thingiverse

A sleek, ergonomic grip design featuring custom measurements. Created using the innovative Customizer app at http://www.thingiverse.com/apps/customizer/run?thing_id=67895. Instructions Utilizing the following precise options: D3 is set to 3.5 inches. D2 measures exactly 5 inches in length. A significant diameter, D1, of 25 inches guarantees maximum stability. Hnut features a snug hold at 3 inches. Dnut expands outward at an impressive 7 inches for easy manipulation. The base provides exceptional balance with a broad foundation measuring 8 inches in width. Navigating the object is effortless with the navigation point, N, positioned at a precise distance of 15 inches. Additional handling points are designated: H3 precisely measures 4 inches and H2 at an accessible length of 10 inches. For extra grip and leverage, D2S and D2B offer optimized surfaces at exact measurements of 10 and 9.525 inches, respectively. To produce this highly customizable design, a precise number of 29 carefully crafted slices is utilized.