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What the heck is this???6/12
This Locust was felled last winter and milled two weeks ago. We moved the slabs indoors and after two weeks this showed up. Really can not see any signs of inspects making these piles of dust but seems most likely the cause to me. Anyone seen this before?
Looks like an anobiid beetle, such as ambrosia, that was in the piece above this one. If the piece above was freshly sawn locust, it is likely too wet to be powderpost beetle.
Thanks! I think we need to flip the slabs over and check closer for these insects I see they are very tiny. Will also move the slabs outside so they can get some air movement.
Well with a magnifine glass and brite light I could see them. They are in fact pretty small. I guess with perfect eye site and right lighting you could see with naked eye but.. I had to use a magnifine glass. Seems they are focused on cambium layer so I an not going to fret it. Just move them outdoors.
I've seen the same. Would spraying the boards with a borax treatment (like TimBor or BoraCare) as they come off the mill prevent this?
I had a similar problem a few years back with some ambrosia maple. I have a friend in the meat business and he let me stash my boards in his freezer for a week. No more dust. Though it did get some blood on it. LOL I think he did that for my benefit.
Remember that the holes are exit holes, and that the insects are then breeding in debris on the ground often for days. So, if you move the lumber when the insects are out, they will be done. It is likely that you freeze them to death at about -40 F. And you can cook them to death at 130 F.
Moved lumber outside and cleaned up the mess in the garage. Hopefully they will go away now that the bunk in moved outdoors.