Official Luthiers Forum!

If me I would sand back just to the wood and prepwith 220p and seal with 1# cut of shellac this should present an ideal preped and sealed surface for poly

Whatever--it works great.

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https://soundcloud.com/jeffreylsuits/he ... -runnin-13

Padding is fine application method. Nothing wrong with it at all, but I did not want anyone to confuse padding waterborne acrylic lacquer to French polishing. They are two totally different application process and types of final film. You may find it to be hair splitting but it is important to those that may not know the characteristics of different finish media and applications, and we have to look out for them. Faulty info can cause people problems. I hope you understand I am not trying to pick on you. I’m just avoiding confusion and I hope you can see how description of finish application is relevant.

Best to you, glad to have you with us here at the OLF[:Y:]

Most finishes will stick well to shellac, but I can't speak for all the newer catalyzed finishes. If it was my guitar, I would spray shellac over the Danish oil, and then the cat poly-whatever. I would probably spray a coat over the body also to seal any contaminates that may be there. I have used cat polyurethane over shellac, no problem. If you are sending it out to one of the pros, they will know what works with their product. They may want to use a sealer wash coat supplied by their brand of finish to be safe.

Brook