Restoring broken plastic

[Chuck Guzis]

I'm looking at a couple of old tape drives that have severe front panel
damage.  

Parts of each are broken off into many small pieces.  I don't know what
polymer was used, 
but it does seem to use a large amount of filler in proportion to resin
(i.e., there's not much 
strength to this stuff--it doesn't break with a sharp "snap", but seems to
fracture like a damp
cracker).

What adhesive is recommended for repairing these items?  Cyanoacrylate
(super glue)?  
Polyurethane (Pro bond)?  Something else?  A solvent cement is out of the
question, I think.

Would reinforcement wtih glass cloth be an option to strengthen things?

Suggestions are most welcome.

Cheers,
Chuck