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worms in pine

6/28/16       
Bill Stuewe Member

I am a bit stumped as I did not think this was suppose to happen in dry wood. In 2011 there was a fire in the area that killed the tops of some local Loblolly pine--I milled 50 logs and put most in my new home. The wood was milled and kiln dried within two to three months of the fire. I had an 18" wide by 2" thick board stored in my shed that I just got out to make a table top with. The wood looks great but when I straightlined it to glue up--taking about a 1/4" off an edge, the wood is all worm eaten. The trails range from about 1/16" to 1/4" and I found one of the critters which is about 1" long and now dead(: The trails seem to stay at least 1/16" from the edges so there is no outward sign of the activity
What is going on here?.
The wood is at 12%MC (stoired in shed with two sides open.


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6/30/16       #3: worms in pine ...
MarkB Member

Termites.

6/30/16       #4: worms in pine ...
Bill Stuewe Member

Look at the first picture and you will see one of your "termites" It is about an inch long, no legs, no wings ----it is a typical big headed wood worm--what kind and what to do about it is what I am waiting for in response???

7/2/16       #5: worms in pine ...
Tennessee Tim

Website: http://tsmfarms.com

Bill it's obvious he's never seen ANY termites......fly...yes a part of them do fly BUT I've seen more that were the "workers" and NO wings...LOL!!!

There's 2 possibilities here....the 1st is it wasn't properly kilned tempeture wise, IT HAS to get a minimum of 130-135 degrees in the heart/center of the board NOT just the exterior....that's why once my kiln reaches a min of 135 I maintain this temp for 24-48 hrs to insure the core of the lumber gets to that temp.

2nd It could have been dried correctly AND the biggest misunderstanding in that field is "...once done it's forever....NOT!!!" A good chance when you put it back in your shed it picked up the worm/bug/pest again. I've seen builders bring in bad/infected wood and contaminate the other kilned wood and have to have it ALL retreated.

Heat is the best thorough killer...most anything applied is only skin deep and they have to travel through the chemical to kill them where some just burrow deeper and don't get effected.

7/2/16       #6: worms in pine ...
Bill Stuewe Member

The wood was kiln dried in about January of 2012 and the pitch set to 160° for several days. Since then the wood has been in an open shed. I understand the acclimation of the dried wood back to the areas normal MC when not in heat/AC environment and the possibility of bug re- infestation. However, from all my reading here and the words of the Wood DR, at this point only PPB should infest dry wood and they do not like pine (soft woods).

The wood is at 12° and these worms are in it that only like wood above 20° MC. What gives???????????????

7/2/16       #7: worms in pine ...
Gene Wengert-WoodDoc

The or house borer does like dry pine, along with termites. What is the MC right now? If high enough, we can get other insects too. But do you have any living insects? If they made these big tunnels, where is all the sawdust (called frass)...if alive in your shed, you should see sawdust piles all over.

7/2/16       #8: worms in pine ...
Gene Wengert-WoodDoc

The previous post should say OLD HOUSE BORER. With this insect, the larva (worm) eats the wood. It can take 2-10 years to form an insect and then exit the wood. Read more at link below

Old house borer

7/2/16       #9: worms in pine ...
Bill Stuewe Member

It is at 12° now and the inside is all eaten up with out a sign at all on the exterior of the board. I ripped about 1/4" off an edge and they stayed about 1/16" from the outside---surprise! when I opened up!! What kinds of wood do they eat? just pine?
I did find one live borer and assume there are more.
I have well over 100000bf of wood stacked around, about half outside drying and the other half in unheated sheds.
I do not know of any feasible way to do much about bugs other than heat the boards before I use them if I am concerned. I know I have bugs but they do not seem real bad overall--just an occasional board or sometime a batch.


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