I have been having fun (if you can call it that) working out the bugs of my
vacuum kiln. the last problem was getting even heat on the inside.
this post shows my failure and my fix in a couple of messages.
http://www.woodcentral.com/newforum/msgset.shtml
--
Knight-Toolworks & Custom Planes
Custom made wooden planes at reasonable prices
See http://www.knight-toolworks.com For prices and ordering instructions.
On Sat, 12 Jul 2003 11:23:51 GMT, George wrote:
> I regularly use wood which has been frozen - outside on my woodpile - and I
> have to say it's gonna take more than a few ice crystals to break through
> cellulose. Lipids are another matter.
yep, my wife pointed out the cellulose difference too when I mentioned it
to her. I rest my case. But I can imagine how much that much ebony would
have cost Steve, and boy if it had been ruined....
david
--
I find that the harder I work, the more luck I seem to have.
-- Thomas Jefferson
D K Woods wrote:
>
>
>a dismissal
>of cryogenics once that said the body would never survive a complete
>freeze. Because water expands when frozen, water that is inside the cells
>would expand and rupture the cell walls, killing all of the cells.
>
>
>
Many animals and insects have been frozen and thawed successfully. Even
houseflys. The larger animals were quick frozen whereas smaller animals
can freeze slow like in nature. I don't know what pre-op treatment the
larger animals where given.
John
I regularly use wood which has been frozen - outside on my woodpile - and I
have to say it's gonna take more than a few ice crystals to break through
cellulose. Lipids are another matter.
Is there a difference between frozen and never frozen? If there is, it's so
subtle I cannot detect it. As to turners, they claim to be using quiescent
freeze-drying, in the belief it is worth the trouble over simply letting
things alone. I disagree. Many, if not all of the methods touted in
rec.crafts.woodturning work, IMHO, more from the placebo effect than
science.
"Fly-by-Night CC" <[email protected]> wrote in message
news:[email protected]...
> In article <[email protected]>,
> D K Woods <[email protected]> wrote:
>
> > I'd check with a few more sources before attempting the freezing trick,
you
> > might be risking the structure of the wood.
>
> One of the tricks turners use for drying green woods is to freeze -
> apparently it works as well as some of the other methods like
> microwaving and boiling. I've not done it, so can't comment on the
> failure rate or proceedure - just wanted to make note that this isn't
> untried, untested.
>
On Sat, 12 Jul 2003 04:16:24 GMT, Steve Knight wrote:
> I have been having fun (if you can call it that) working out the bugs of my
> vacuum kiln. the last problem was getting even heat on the inside.
> this post shows my failure and my fix in a couple of messages.
> http://www.woodcentral.com/newforum/msgset.shtml
I'd check with a few more sources before attempting the freezing trick, you
might be risking the structure of the wood. I remember reading a dismissal
of cryogenics once that said the body would never survive a complete
freeze. Because water expands when frozen, water that is inside the cells
would expand and rupture the cell walls, killing all of the cells.
Not that you have to worry about killing the wood, and you certianly aren't
planning on reviving anything later (hehe) you might consider the damage
freezing water might do to the cellular structure of the wood. I'm sure it
probably depends on the existing moisture content. If it's high enough,
you might find the wood becoming brittle and, well, crumbly.
This is ALL theory. Just wanted to bring the idea to the table, so to
speak....
btw, what a sweet sweet load of ebony there! I can't wait to see the
planes that come out of that batch.
david
--
I find that the harder I work, the more luck I seem to have.
-- Thomas Jefferson
In article <[email protected]>,
D K Woods <[email protected]> wrote:
> I'd check with a few more sources before attempting the freezing trick, you
> might be risking the structure of the wood.
One of the tricks turners use for drying green woods is to freeze -
apparently it works as well as some of the other methods like
microwaving and boiling. I've not done it, so can't comment on the
failure rate or proceedure - just wanted to make note that this isn't
untried, untested.
--
Owen Lowe and his Fly-by-Night Copper Company
Offering a shim for the Porter-Cable 557 type 2 fence design.
<http://www.flybynightcoppercompany.com>
<http://www.easystreet.com/~onlnlowe/index.html>
On Sat, 12 Jul 2003 00:18:25 -0500, D K Woods <
>I'd check with a few more sources before attempting the freezing trick, you
>might be risking the structure of the wood. I remember reading a dismissal
>of cryogenics once that said the body would never survive a complete
>freeze. Because water expands when frozen, water that is inside the cells
>would expand and rupture the cell walls, killing all of the cells.
I think it would be way too much of a hassle for me to freeze it. Plus just the
money it would take.
--
Knight-Toolworks & Custom Planes
Custom made wooden planes at reasonable prices
See http://www.knight-toolworks.com For prices and ordering instructions.