Today I took apart a rear wheel to use the cheapy origin 8 hub on a different wheel build. I got this used from craigs and the cog was seized to one side of the hub. I tried everything in the arsenal, including penetrating catalyst, heat, cheater bars... even broke a chain whip trying to muscle this sucker off. Came down to using the dremel with a cut off.... took a while but finally its off and I can clean up the hub and start lacing. Fewf!