I'm doing exactly what it says on the tin for the finish, using a mixture of interior/exterior use prep:
* Thinned first coat with white spirit
* Undiluted 2nd, 3rd and 4th coats
* 3 undiluted coats are all that's required
* No rubbing back required between coats
* Final coat will be applied with Liberon 0000 steel wool for a smooth finish
10-15 coats sounds mental! :o I guess it depends on the exact finish used, and how close to basic Linseed Oil it is. This Rustins one has extra polymers etc to speed drying and I guess thicken the finish:
http://buildyourguitar.com/resources/tips/danshoil.htmAlso, I'm not going to be gigging it heavily every night for 40 years so protection isn't a major issue. If it was, I would be after a hard finish. I'd like this one to be just protected enough to not damage the wood with normal use, and relic/age really nicely :D