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Originally Posted by ali_rockon22
Anodizing is very nice. It is extremely light-weight and doesn't chip or scratch. But the only problem is that you can only do it to small parts.
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Not necessarily - if you have a big enough anodizing tank and a large enough power supply (you need somewhere in the neighbourhood of 4-12 amps per square foot of part surface area) you can anodize anything. We are going to be anodizing most of the aluminum on our robot this year - it's very durable, looks great, is relatively inexpensive, and is fun to do. The only hitch is that most of the stuff we use like extrusion and angle comes already anodized but not dyed, so it takes a bit more work to de-anodize first.