My very VERY old Hamilton Beach model 612 blender will not turn on
because the 7 push buttons are all jammed. Blender has been sitting on
my shelf unused for several years.

Since no parts are available,
I want to disassemble the case to try to free those switches.
I do not know the type of tool, if any, needed to release the two
plastic case parts.

Hamilton Beach did not let me talk to someone for assistance.

Thanks for any helpful hints.
Dave_s