[Harp-L] Sealing wood comb

[Cljdm@xxxxxxx]

Hi, 
I'd like to know who seals their combs with polyurethane? I have been  
lightly spraying them a couple of times, airing them out, and then putting the  
harp back together. Is this safe? I know a little late to ask. I do like the 
 results though. Lot of throat and mouth cancer going around, so I started 
to  wonder a bit.
 
thanks for any info,
 
Chris Mastakas