Wood Drying Topics

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Dry Kiln Maintenance

Are Dry Kilns high maintenance or low maintenance? Can good or bad kiln maintenance affect the quality of the lumber you dry?

51 Posts
11 Topics

Last post by Grady
in Re: kiln coils & steam t...
on April 26, 2015, 10:59:13 PM

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Stacking/Sorting Wood

Stacking lumber for drying is a critical part of producing quality lumber. Sorting lumber before drying simplifies stacking and also aids in placing material of similar drying characteristics in the same kiln charge. The extent of sorting depends on practical considerations--some sorts are almost unavoidable, whereas others are sometimes omitted. Lumber can be sorted by species, moisture content, heartwood and sapwood, wetwood, grain, grade, thickness, and length.

34 Posts
12 Topics

Last post by rfosters
in Re: Stacking Frozen Lumb...
on January 21, 2015, 10:52:59 AM

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Impact on Planing

Drying impacts the planing process. Wood that is too wet or too dry may have a chipped or fuzzy surface. Over-dry lumber may result in skip and slow the planer feed speed. Moisture content measurement at the planer can be used to improve the drying process. Feedback from the planer to the kilns is essential to improve or maintain quality drying.

15 Posts
5 Topics

Last post by cork46
in Re: drying 2" Douglas Fi...
on May 08, 2014, 11:07:38 AM

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Dry Kiln Control

Lumber dry kiln control systems control the environmental conditions of heat, relative humidity, and air circulation necessary for the proper drying of hardwood and softwood. These control systems are usually personal computer (PC) or programmable logic controller (PLC) based. On some older systems, cam follower control is used. Dry kilns typically dry lumber to between 3 and 19 percent moisture content.

47 Posts
14 Topics

Last post by M Gallahar
in Continuous Kilns and Tax...
on April 09, 2015, 09:27:42 AM

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Moisture Variability

Variability in wood properties causes boards within a stack of lumber to dry at different rates and reach different moisture content levels after drying is completed. The consequence is that the boards will have properties that differ from ones that were intended to be achieved by the drying process.

58 Posts
21 Topics

Last post by StavrosA
in Using Near-Infrared Dete...
on September 16, 2014, 08:54:42 AM

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Drying Defects

Wood drying may be described as the art of ensuring that gross dimensional changes through shrinkage are confined to the drying process. Ideally, wood is dried to that equilibrium moisture content as will later (in service) be attained by the wood. Thus, further dimensional change will be kept to a minimum.

13 Posts
5 Topics

Last post by HencoV
in Re: End of Log Sealing
on April 13, 2014, 10:49:02 PM

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Mold & Stain Issues

Some stains are chemical and some stains are biological. It is important for the operator to distinguish these. Stains sometimes appear, and then go away on their own. Processing time from when the tree is felled to when the wood is dried is a major factor in controlling stain. Storage conditions for the logs and lumber are important. The kiln temperature, humidity, and airflow can make the problem worse. Insect discussions are welcome here too.

28 Posts
10 Topics

Last post by PhilM
in Orange Mold
on March 25, 2015, 11:46:26 AM

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General Discussion

Feel free to talk about anything and everything related to kiln drying for the wood industry in this board.

165 Posts
52 Topics

Last post by M Gallahar
in Re: Continuous Kilns and...
on May 05, 2015, 09:44:35 AM

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Industry Articles

Feel free to post industry articles related to kilndryn for the wood industry.

9 Posts
6 Topics

Last post by HencoV
in Re: Investigation of His...
on April 18, 2015, 10:48:44 PM

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Training / Events

Find information here on upcoming Trade Shows, Training or Association Meetings

11 Posts
11 Topics

Last post by PhilM
in NC State University Anno...
on April 08, 2015, 12:20:55 PM

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Job Postings

A Place for associations and members to post Wood Drying related jobs

9 Posts
9 Topics

Last post by admin
in Boiler Trainee/Boiler Op...
on April 08, 2015, 11:17:42 AM

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News

Look here for industry news!

3 Posts
3 Topics

Last post by admin
in Shrinking timber supply ...
on February 24, 2015, 10:28:49 AM

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Kiln Drying Forum - Info Center

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Upcoming Events: NC State University Announces 2015 Dry Kiln Operator's , Kiln Drying of Hardwood Lumber Short Course, 2015 Forest Products Machinery and Equipment Expo

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