In my experience, commercially made wafer bonders are very expensive
pieces of junk.  If you have no money now, you'll have even less after a
few service calls.  I would suggest building your own.  If you are doing
anodic bonding, a hot plate, 500 volt power supply and coat hanger
electrode will do the job.  If you want to do thermocompression bonding
you can probably do better with a press and some off-the-shelf heating
elements.

Roger Shile

-----Original Message-----

Dear all:
    Now I`m looking for some economical ,even secondhand wafer level
bonder. Because we have no enough money,so we can`t afford new machine.
Please help me!We need it very much!
    regards
                        Nielei