[Harp-L] Polyurethane Comb sealing

[Cljdm@xxxxxxx]

Hi all,
 
Would sealing a Marine Band comb with polyurethane spray 3-4 times be a  
safe way to seal a comb? I applied 3-4 light coats over 18 hour period and  
let sit for 10 hours and then put the reed plates back on. Am I going to  
breath my way into some unknown disease on these 4 harps?
 
thanks for any information,
 
Chris Mastakas