My steam bending chamber (3-inch steel pipe x 60 inches long with 1500 watt
electric heater in one end) 3/4 full of water, quickly comes up to the
pressure switch set point of 10 psi, and has worked ok for some years,
usually bending hickory for Windsor chair backs. Now, when I try to use it
on white oak, the wood has a nasty black color. Why?
One theory has something to do with the tannic acid I believe is present in
the oak, but I'm no chemist. Is there a reaction between the steel pipe and
the oak? Any comments are welcome. Dave
In past times, Japanese women used this same preparation to blacken
their teeth for cosmetic reasons.
(And before we feel too smug, European women of the same period were
using white lead as a skin foundation)
You bet there is !
Plastic gas main pipe for oak. Less risk of burning yourself when
handling it too. I've also never needed to pressurise a steam chamber.
It's not a theory, it's a fact. You need another steam bending chamber of a
material other than steel or iron.
"The test and the use of man's education is that he finds pleasure in the
exercise of his mind." Jacques Barzun
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.