Reply by Thomas Keefe

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Thomas Keefe

131 posts in 3408 days

#1 posted 10-07-2010 07:57 PM

Here is an update: After reading all of your responses yesterday and looking around online, I decided that I would try the microwave. The thought of killing the bugs and drying the wood at the same time was too much to resist. I put the bowl in the microwave for 30sec. and let it cool down for 5 minutes and then did the whole process again. I was happy that the wood was not cracked and that it hadn’t warped. I was also surprised how much steam came out of the wood.

When I inspected the bowl, I noticed several new bumps about the size of the original hole that were light in color. I assume that when the wood got hot some of the beetles tried to get out. I don’t think they did. Also, I think the grain was raised a bit as the surface is pretty rough now. (I had sanded it smooth with 600 grit.)

In my searching online I found this reference from University of Kentucky on Thermal Deinfestation – They suggested that the microwave is not reliable, because there is no way to determine if the proper temperature is reached. So, to be safe, I followed up using their method with the oven – 170 degrees Fahrenheit for an hour. This didn’t cause any new checking or
shape changing either. Also, no new beetle holes. So, I think that the microwave dose really did do the trick.
Either that or after surviving the microwave treatment, the 170 degrees didn’t bother them and they decided to stay put. :-)

Thanks again for all of your help.


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