Hey, I was wondering what the best (and more importantly cheapest) way for putting permanent marking like logos, designs, 0-10 fans, control labels etc. on aluminium.

Was looking at bake on decal paper but just wondering if there's any better methods out there?
Epiphone Les Paul Plus Top
Jet City JCA5212RC (SLO Modded)
Ibanez WD7 Wah
Mad Professor Sweet Honey Overdrive
TC Electronic Flashback Triple Delay
TC Electronic Trinity Reverb
I've used inkjet clear decal paper to good effect - you do need to put them on, and then put a few coats of clear coat over the top, but it's cheap and effective.
Waterslides and clearcoat... its what everyone else does. Theres a few tutorials online too.