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Author Topic: Will this work as simple DH kiln  (Read 501 times)

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Offline Downstream

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Will this work as simple DH kiln
« on: December 16, 2017, 03:01:36 PM »
First of all let me say I have not really looked into general kiln design solar or DH.  I have bumped into a opportunity to buy a Drizair 1200 commercial/portable dehumidifier for about $300.  Says it will pull about 15 gal/day.  I also have a standard storage shed on my property about 8'x12'.  Could I put a pallet of stickered 2" slabs into this shed, put the dehumidifier into there also and use the set up for periodic drying of lumber quicker than total air dry.  Just a thought that popped into my head when I bumped into the deal.  I don't need a volume kiln but would be nice to speed up the process a little if possible.
EZ Boardwalk Jr,  Granberg Alaskan Chainsaw Mill, Stihl 660 and 211, Logrite 60" cant hook

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Re: Will this work as simple DH kiln
« Reply #1 on: December 16, 2017, 08:11:41 PM »
Well - there is an active thread somewhere on here where a FF member is doing just that.  He put his kiln together using 4" rigid foam, a couple of fans, and a de-humidifier.  Has made some beautiful wood in it.  Now I just need to find it again for you. 
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Re: Will this work as simple DH kiln
« Reply #2 on: December 16, 2017, 08:13:32 PM »
'92 Franklin 170 grapple skidder
'92 Franklin 5000 wheeled buncher
Wicked Awesome Basset Hound * 2
JD 490D with 4 roller FabTek processer / hydraulic hose breaker
Hot wife
Wood Mizer LT35HDG25, Re-saw attachment
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Offline pineywoods

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Re: Will this work as simple DH kiln
« Reply #3 on: December 16, 2017, 08:31:33 PM »
My solar kiln has a small room de-humidifier inside. Despite some nay-sayers, I find it works good.
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Re: Will this work as simple DH kiln
« Reply #4 on: December 16, 2017, 09:43:52 PM »
Is your shed insulated, if not would the set up be trying to dehumidify the whole world?
I am just asking, as I do not know.
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Re: Will this work as simple DH kiln
« Reply #5 on: December 17, 2017, 08:41:54 AM »
Thanks for the comments so far on this.  Clearly I need to think my way through this in a little more detail.  My op was generated probably in haste thinking about the deal and not the actual process.  I did like the attached forum thread and the foam box concept has my brain clicking away.  I would prefer to have something more portable like that which I can set-up and take down as needed.   My assumption is that DH kiln dried wood will be more similar to "air dried" vs heated kiln dried.  I have only worked with air dried wood so no first hand experience with the differences between the two but do see a number of discussion about the topic so there must be something to it.  Thanks again for the feedback.
EZ Boardwalk Jr,  Granberg Alaskan Chainsaw Mill, Stihl 660 and 211, Logrite 60" cant hook

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Re: Will this work as simple DH kiln
« Reply #6 on: December 17, 2017, 09:42:27 AM »
I suspect that wood species has something to do with the results.  I say that knowing how PT SYP is first dried in a vacuum with basically no stepdown process involved, and the stuff does not tear itself apart.  Having worked with a little Doug Fir - some of what was dried in that other post - I find the two similar.  I suspect that oak will probably not act quite as nicely. 

That having been said I actually was thinking I may try to duplicate this set up and see what I can do with it. 
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'92 Franklin 5000 wheeled buncher
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Re: Will this work as simple DH kiln
« Reply #7 on: December 17, 2017, 01:16:55 PM »
Most of my wood that I would want to dry in the kiln is oak and walnut.  Any pine that I do is mostly for outdoor benches so not overly worried about kiln drying for that application. 
EZ Boardwalk Jr,  Granberg Alaskan Chainsaw Mill, Stihl 660 and 211, Logrite 60" cant hook


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