Hand-held ultrasonic metal welder

[elektrinis]

Hello,

I am looking for hand-held utrasonic welder to bond 0.5mm aluminum wire to larger copper part. Basically what I need is similar to bond wire machines used for chip making, but hand held and for much larger wire. I would like to attach it to CNC machine at some point, but for now, only hand-held solution is needed. I have searched for couple of days and found many plastic welders, such as:


However nothing similar for metal, only large and expensive stationary machines. Turns out, horizontal vibrations used for plastic, and vertical for metal. But no other difference I saw so far.
Any suggestions?