Turning Archive

Subject:
monitor the moisture *PIC*
Response To:
Air Drying Cherry ()

John K Jordan
I'm using dogwood that size now that's been air drying for around 10 years. On the other hand some 3x3 soft ambrosia maple was nearly dry in just months.

You can monitor the moisture: weigh some of the blanks with a sensitive scale every few months and record the weight each time. When the weight quits dropping the wood is as dry as it's going to get in that environment

Alternatively, you can periodically check the absolute moisture content with the oven dry method, a destructive test that involves weighing a sample cut from the middle of a typical block, heating in a oven until completely dry, then weighing again. This is the most accurate way to measure moisture. I took this photo when testing the moisture content of some air-dried ebony. I used a thermocouple to monitor the oven temperature but it's not absolutely necessary, just don't get it too hot.

I use an old toaster oven and these tiny scales:

https://www.amazon.com/gp/product/B0012LOQUQ
https://www.amazon.com/gp/product/B002SC3LLS

This might be useful. It has the oven dry method and all about air drying.
https://www.fpl.fs.fed.us/documnts/fplgtr/fplgtr117.pdf

JKJ

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