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| Nitro over shellac?? https://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=18095 |
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| Author: | Rvsgtr [ Wed Jul 23, 2008 6:58 pm ] |
| Post subject: | Nitro over shellac?? |
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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| Author: | Martin Turner [ Wed Jul 23, 2008 7:26 pm ] |
| Post subject: | Re: Nitro over shellac?? |
Im not a nitro man but I believe shellac is a perfectly acceptable sealer under nitro. |
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| Author: | Kent Chasson [ Wed Jul 23, 2008 7:34 pm ] |
| Post subject: | Re: Nitro over shellac?? |
No probblems. |
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| Author: | Hesh [ Wed Jul 23, 2008 9:07 pm ] |
| Post subject: | Re: Nitro over shellac?? |
Piece of cake - works great. |
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| Author: | Blanchard [ Thu Jul 24, 2008 8:19 am ] |
| Post subject: | Re: Nitro over shellac?? |
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 |
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| Author: | Barry Daniels [ Thu Jul 24, 2008 1:14 pm ] |
| Post subject: | Re: Nitro over shellac?? |
Blanchard wrote: 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. |
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| Author: | Mike Collins [ Thu Jul 24, 2008 1:42 pm ] |
| Post subject: | Re: Nitro over shellac?? |
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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| Author: | Rvsgtr [ Fri Jul 25, 2008 11:27 am ] |
| Post subject: | Re: Nitro over shellac?? |
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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| Author: | Chris Paulick [ Fri Jul 25, 2008 3:46 pm ] |
| Post subject: | Re: Nitro over shellac?? |
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? |
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