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More burned wood

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Project by Puupaja posted 11-30-2009 06:01 AM 3487 views 1 time favorited 13 comments Add to Favorites Watch
More burned wood
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This is board for kitchen I made from heat treated birch. It´s oiled first and then I waxed it with Osmo color oilwax. I don´t know how much you know about thermowood but here is something about it http://www.suomenlampopuu.fi/in_english/ and http://www.thermowood.fi/

-- http://www.mnwood.fi





13 comments so far

View jackass's profile

jackass

350 posts in 3525 days


#1 posted 11-30-2009 07:01 AM

Hi Puupaja,
I have been trying to find information on this type of wood here in Canada. I understand this process is done by microwave and takes the place of kiln drying. I have a piece given to me by a supplier, but he doesn’t stock it any longer. It is a beautiful colour and and they dry oak and maple with this method. I think your process in Finland is probably similar I would like to hear from someone that might know about it here in Canada. I would like to do a whole set of kitchen cabinets like this.
Jack

-- Jack Keefe Shediac NB Canada

View Puupaja's profile

Puupaja

310 posts in 2913 days


#2 posted 11-30-2009 07:25 AM

Hello Jack,

It´s not with microwawe they put wood in sealed container and heat it that temperature is about 180-240 C. It is really important that container is closed because with oxygen it will explode!! The process takes less than 24 h. With more temperature you get darker wood but lose strengten of wood. I will post more pictures later what I have done from this kind of wood

Matti

-- http://www.mnwood.fi

View a1Jim's profile

a1Jim

116497 posts in 3389 days


#3 posted 11-30-2009 07:49 AM

Hey Matt welcome to Ljs
Very nice wood and interesting process.

-- http://artisticwoodstudio.com Custom furniture

View Scott's profile

Scott

4 posts in 2915 days


#4 posted 11-30-2009 08:18 AM

Do you know if this process makes the wood weigh less?

-- -Scott

View Puupaja's profile

Puupaja

310 posts in 2913 days


#5 posted 11-30-2009 08:54 AM

Hello Scott

Yes because all the moisture goes away, like spruce and pine lost also pitch

-- http://www.mnwood.fi

View OhValleyWoodandWool's profile

OhValleyWoodandWool

970 posts in 2933 days


#6 posted 11-30-2009 09:35 PM

Pretty wood – never heard of the process – interesting

-- "All you need in this life is ignorance and confidence, and then Success is sure." Mark Twain

View RexMcKinnon's profile

RexMcKinnon

2593 posts in 3007 days


#7 posted 11-30-2009 09:51 PM

Is this the same procedure they use to darken bamboo? I think so, it’s one of the reasons they say bamboo flooring is greener than others. No chemicals used to change the color.

-- If all you have is a hammer, everything looks like a nail!

View NoSlivers's profile

NoSlivers

210 posts in 2902 days


#8 posted 12-14-2009 06:10 AM

birch…. wouldn’t have guessed that. I checked out the liinks you placed in the post, but remain uncertain about a couple of aspects. What are the size limits on the pieces of wood that can be treated in this manner? For instance, could someone do the initial green turning of a bowl (leaving it fairly thick) and then heat treat? Or would that just increase the likelihood of cracking, since it’s removing the moisture so quickly? If this would work without ruining the bowl, you could really be onto something here.

-- If you don't have time to do it right, do you have time to do it twice?

View Puupaja's profile

Puupaja

310 posts in 2913 days


#9 posted 12-14-2009 08:28 PM

Hi Nosilvers! I have seen knife handels what was in final shape, they but them to owen in metal cage and there was many hunreds of these. Maybe it is possible do it with bowl also, but the charge of treatmend goes with volume so maybe it pretty expensive.. cost of threatment is little over 200 €/ cubic meter ( about 300 $ per 35 cubic foot). Wood does not crack during process it only kind of shrink little.
http://media.scandinavianoutdoorstore.com/productimages/ilves_carbinox_85mm.jpg this is adress for heattreated handle of knife

-- http://www.mnwood.fi

View reggiek's profile

reggiek

2240 posts in 3082 days


#10 posted 12-14-2009 08:43 PM

Excellent info…thanks Puupaja….I haven’t had the chance to consider this before you posted….it is a beautiful result….certainly a great idea to keep in your arsenal of ways to finish projects.

By the way NoSlivers….I use a microwave to speed up the process of curing my green turned bowls (only when they fit in the MW of course) . You can also boil them…see http://www.woodturningvideosplus.com/boiling-green-wood.html for info on this process.

-- Woodworking.....My small slice of heaven!

View NoSlivers's profile

NoSlivers

210 posts in 2902 days


#11 posted 12-16-2009 05:41 AM

Well, this is getting off topic for this thread but… The microwave gives me mixed results, sometimes it increases the warping. Perhaps I’m not paying attention to the flow of the grain and I’m setting myself up for this, or maybe I’m just not leaving it thick enough before microwaving. Sometimes it works fine and sometimes I’m left wondering what I did wrong. I haven’t tried boiling….

-- If you don't have time to do it right, do you have time to do it twice?

View rusty2010's profile

rusty2010

143 posts in 2370 days


#12 posted 03-29-2014 01:17 AM

beautiful piece of wood, do you know if the sell it in the states. thanks

-- check, recheck then check again

View Puupaja's profile

Puupaja

310 posts in 2913 days


#13 posted 03-29-2014 08:02 AM

Hello sorry I don`t know if available in states

-- http://www.mnwood.fi

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