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Anybody ever tried/had experience with nitro over a shellac sealer?

I'm finishing up a quilted honduran mahogany/carpathian guitar with curly maple bindings and don't want to stain. I like the color the shellac gives the mahogany (and a subtle darkening of the bindings) but the customer has requested nitro back/sides with french polished top. The vinyl sealer doesn't color the wood as much as the shellac and is the reason for my question.

thanks
SR

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"We might not be big but we sure are slow"

Im not a nitro man but I believe shellac is a perfectly acceptable sealer under nitro.

No probblems.

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http://www.chassonguitars.com

Piece of cake - works great.

Shellac works fine under nitro.

I use it to seal spruce tops and I spray vinyl sealer everywhere else. The shellac does a better job of blocking spruce pitch which can cause micro pitting in nitro lacquer.

Mark

I have always wondered what caused that. I'll be sure to use a shellac sealer on spruce in the future. Thanks Mark.

the "lac" in lacquer is Shellac !
That was used as the base ingredient at first!
may still be!
But they add plastizers& all kind of stuff to make it more durable and less suseptible to sweat & heat!
it works great under Nitro!!!!!!!!!!!

Please excuse my spellings!!!

mike

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Mike Collins

thanks everybody. I thought it would work but wanted to be sure. I actually normally fire a light coat around the edges of the top prior to binding purfling to save small fibers from being lost with the taping process. Then I usually sand it off prior to finishing. Now I won't have to be quite so judicious when final sanding the top.

thanks again.
SR

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"We might not be big but we sure are slow"

The one thing to watch is that you don't put the shellac on too thick as that can cause checking if exposed to cold too rapidly. Other then that I thought that shellac was pretty much the norm. The old spit coat. Isn't putting on orange shellac the way to get the vintage/ aged color on a spruce top?