Two years ago my team used omniwheels, and we built
them ourselves. It was a fun project and we learned many things, however ...
If we were to use omniwheels again I am pretty sure we would buy them from Andymark, for three reasons: (1) Andymark's molded rollers are more durable than the ones we fabricated, (2) our cost of materials to build omniwheels was nearly the same as the price of buying them ready-to-go from Andymark, and (3) our time would be better spent building scoring mechanisms than building omniwheels.
__________________
Richard Wallace
Mentor since 2011 for FRC 3620 Average Joes (St. Joseph, Michigan)
Mentor 2002-10 for FRC 931 Perpetual Chaos (St. Louis, Missouri)
since 2003
I believe in intuition and inspiration. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research.
(Cosmic Religion : With Other Opinions and Aphorisms (1931) by Albert Einstein, p. 97)