How Dry is your wood turning? #1: Using a remote Hygrometer

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Blog entry by Paul posted 09-03-2014 02:49 PM 1814 reads 0 times favorited 3 comments Add to Favorites Watch
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A common technique when turning wood is to turn a green piece of wood, then store it in a brown paper bag until it is dry. The paper bag lets the wood dry slowly and uniformly, this reduces cracking and splitting.

The problems are: How long to store it? When is it dry? You cannot see it in the bag and commonly available moisture gauges only measure the surface of the wood.

I’m not sure how unique this is but I’ve found that by including a remote humidity sensor in the paper bag I can monitor the moisture, when the humidity in the bag equals the outside reading the wood is about as dry as it is going to get. No need to open the bag or to try to measure the moisture with inaccurate surface probes.
Also, by using the same procedure but using a plastic bag, the moisture content of any wood can be accurately and easily be determined.

These temp/humidity gauges are widely available at a low cost from sellers such as

-- If you say 'It's good enough', it probably isn't.

3 comments so far

View CFrye's profile


8575 posts in 1261 days

#1 posted 09-04-2014 04:57 AM

Interesting concept, Paul.

-- God bless, Candy

View lew's profile


11264 posts in 3176 days

#2 posted 03-05-2015 03:29 PM

That is a really neat idea! Sure beats the old shavings in a paper bag and wait a year!!

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

View JoeinGa's profile


7370 posts in 1428 days

#3 posted 03-05-2015 07:59 PM

So will you rough-turn a bunch at a time, date them all and put the remote in ONE of them, knowing that they HOPEFULLY will all be dry at the same time? Or do you buy 20 of these gauges?

-- Perform A Random Act Of Kindness Today ... Pay It Forward

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