On Thu, 23 Oct 2003 23:55:18 GMT, Bay Area Dave
wrote:

It's been my understanding that you don't use automotive lacquer on
wood, as the auto lac won't give like lacs made for wood. ie: it'll end
up cracking if there is appreciable wood movement.

One of the worst finishes for handling wood shrinkage is the original
Asian urushiol lacquer. The "tenting" failure mode is quite common on
old pieces.

AIUI, car paint is flexible, especially some of the modern ones that
are usable on moulded plastic bumpers / fenders, but it's not too good
on elongation. However items that you paint like this are often made
of manufactured sheetgoods (ply, MDF) rather than classic solid timber
and are inherently more stable. A coat of impermeable paint then slows
moisture transfer further.

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Die Gotterspammerung - Junkmail of the Gods