the process was a pain in the a** but well worth it... specially now that I understand it more... basically I made ceramic casts from bike parts I liked (after cleaning them) and cast it back in plaster, then cleaned and filed it till I was happy and then slumped glass over it..

here's another photo of a piece with a recycled cog in it... this type is really a pain in the a** bc glass and metal have different rates of expansion and contraction (ie: the heating up and cooling down thing can crack the glass - even make it explode off of the metal - if you're not *really* careful)...