[Amps] Removing enamel insulation?

[Joe Subich]

Does anyone have a good way to remove enamel (Formvar?) from thin wires? 
Scraping/sanding works fine for large wires but doesn't work too well 
for thin wires.  

Is there a chemical that will do the job (dip/wipe)? 

I'm looking to wind some small toroid transformers (receive/low power) 
and need to strip the wires close to the core after I have would the 
transformer. 

73, 

   ... Joe, K4IK