Has anyone done a tempered raw aluminum yoyo?

Ive seen titanium be treated by heat to makenit look absolutely gorgeous through bronze color to deep purple but, has it been done on aluminum?

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It can’t be done on aluminum. Hey that rhymes!

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I have used cryogenics on my alum-yoyos, and it made a difference in my opinion. Hard to quantify and objectify, but note worthy no-less.
Figured a hard freeze on the nano-level would be better for overall molecular distribution.

Got the idea from a weird science TV show.
Where as Formula1 motorsport and other high tech industries utilize this technique.

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https://img.fireden.net/v/image/1504/21/1504219402398.png @codinghorror

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^ So damn funny!!! :rofl:

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