I have a pile of 8/4 hard maple, 15-20" wide, about 7' long. They've been stickered air drying for about 5 years outdoors with a metal roofing cap on them. I went to check on them recently and was disappointed to see lots of powder post beetle piles. I surfaced one board, and it will have to be designated as "wormy" but it has nice color and is quite solid. My question is if I build an insulated heated box to sterilize them now (shoot for 135 degrees for maybe a couple days to heat to core?), will i likely experience degrade from that? They're at about 15 percent now according to my pinless meter. Would I be just as well waiting till spring? No more damage will occur between then and now, right?
Thanks!