IMHE, all of them. The tung oil that is not tung oil appears to
be a myth popularized by Bob Flexner in _Understandign Wood Finshes_.
Tung oil _finishes_ may have little tung oil in them, but equating
tung oil finish with tung oil makes as much sense as equating
lates paint with latex.
Mind you, I do recommend Flexnor and his books, just with some
reservations as he is not a chemist (nor am I but I have done
lab work and had some safety training) and he tends to not be
clear on what is a matter of (his) taste vs fact.
Flexnor's strength is in explaining what to do to get specific
results, and how to do it as simply as possible. That is what
he promises in his books, and he delivers.
The ones declaring themselves 100% tung oil, otherwise, suit city. Now tung
oil finishes of various types abound. As noted elsewhere, they usually
contain thinners to make them flow better, driers to make them cure faster,
and perhaps resins of different sorts to make the film more wear-resistant.
Not to pick nits, but I thought they were using truely boiled linseed
oil, bees wax, and resins in the varnish oil product. Not sure
about the danish oil. I've only used the varnish oil and like it
Chris Richmond | I don't speak for Intel & vise versa
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