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View Mark's profile

Question on solar kiln drying

by Mark
posted 10-04-2018 04:40 PM


4 replies so far

View pintodeluxe's profile

pintodeluxe

5918 posts in 3178 days


#1 posted 10-04-2018 05:07 PM

If you cut into the slab and checked the core reading, then it’s a representative sample of the moisture content. Make sure to put the moisture meter probes at the center of the slabs thickness, and take several readings.

As to weather the slabs all dried the same, that may be a question of how good the air circulation is in your friends kiln. For mine I use 4 ceiling mounted attic fans so there are no dead spots in the kiln. 15% is pretty good for a slab. 12% is even better. For milled lumber I’m looking for 6-8%.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View Mark's profile

Mark

54 posts in 641 days


#2 posted 10-04-2018 05:29 PM

So that’s a good measure, despite only ripping 2” into the long edge of the board? Excellent.

And can you clarify your comment regarding 15% being good for a slab? Do you mean that you find it acceptable to be sold a slab at that content, and then you dry it further, or are you suggesting that you would begin working with a slab at 15%?

Thanks

View RobS888's profile

RobS888

2604 posts in 2210 days


#3 posted 10-04-2018 05:51 PM



If you cut into the slab and checked the core reading, then it s a representative sample of the moisture content. Make sure to put the moisture meter probes at the center of the slabs thickness, and take several readings.

As to weather the slabs all dried the same, that may be a question of how good the air circulation is in your friends kiln. For mine I use 4 ceiling mounted attic fans so there are no dead spots in the kiln. 15% is pretty good for a slab. 12% is even better. For milled lumber I m looking for 6-8%.

- pintodeluxe


Pinto, why don’t you give him a link to your article on solar kilns.

-- I always suspected many gun nuts were afraid of something, just never thought popcorn was on the list.

View WDHLT15's profile

WDHLT15

1816 posts in 2841 days


#4 posted 10-06-2018 12:28 PM

Patience. 8/4 white oak will dry slow. 3 weeks is probably not enough time starting from 25% from my experience. Your 2” slice off the edge is likely not representative of the core moisture in the slabs. For my thick slabs, I shoot for 10% or less.

-- Danny Located in Perry, GA. Forester. Wood-Mizer LT40HD35 Sawmill. Nyle L53 Dehumidification Kiln. hamsleyhardwood.com

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