Aluminium doesn't corrode. It forms a layer of aluminium oxide on any surfaces exposed to air and so cannot rust. Are you referring to steel? - Wilfred
I have seen alumin(i)um yo-yos that have been lying in a damp garage for several months. They developed a thick white crust. Maybe they were stored next to some corrosive chemicals. Luckily they were not mine. :-) With my own aluminum yo-yos I have indeed never had any problems. --HB 03:19, 6 Feb 2006 (PST)
Hm. Anyway, surely aluminium is harder than plastic, so I wouldn't list is as soft. Its major downer is that is costs more IMO. --Wilfred 10:24, 6 Feb 2006 (PST)
I meant soft as in dents or scratches easily. Bang an aluminium yo-yo on a hard smooth floor, and you will see, that it dents (and sometimes even contorts) quite easily, whereas a celcon/delrin yo-yo will survive with barely a noticeable scratch. --HB 01:22, 7 Feb 2006 (PST)
Some people say celcon and delrin are really the same plastic. Is this right? I know Yoyojam's "celcon" yo-yos are molded, and come in a variety of colors. I know the Milk and Silk "delrin" yo-yos are lathed and only come in white. So are they really different or is the difference just in brand names of the plastic makers or something? If anyone knows this section could be cleaned up!
OH and a history question - what exactly was the original Yomega Hyperwarp (not Wing) made from? --YuncanDodo 11:36, 2 March 2007 (CST)