Re: scanner volume knob breaks

I too have had a knob split, and also lost a knob.  What I did, was 
to get a scrap wooden dowell I had laying around, and cut off a 
section about the same size as the knob, and drilled a hole in the 
center, not all the way through. Actually I rounded off the sharp 
edges with sand paper, while in my drill press while a bit longer 
than the final version. 
The hole in the center was just slightly smaller than the shaft on 
the 780, so when I pressed it on, it had a tight fit.  Whole process 
took about 10-15 minutes, and looked and felt pretty good.    

   Anyway, a cheap way out if there aren't big enough pieces to 
glue, or if the knob is lost.