(Haven't been here for a while, lots of other distractions.) SO I recently, for what I intended to be a quickie Christmas present, bought one of the Woodcraft "Exotic wood cutting board kits" (brown heart, marble wood, purpleheart, wedge, maple) I THOUGHT I did a decent job of sanding the edges before gluing the various strips. I used my longtime go-to glue, Titebond III, manufacture date, as best I can tell, April 23. Glue-up and subsequent sanding seemed to go well. I was about to put on the final coat of oil finish, I noticed a slight split in one of the joints, and pulling a little, two of the joints completely separated. Examining the pieces, the other joints seem to be intact and strong. Looking closely at the two failed joints, it appears that the glue never even substantially penetrated the surfaces of the boards. Glue has been kept in my shop, well above freezing, since purchase in probably late spring, glue-up was done at about 65 F, and curing at no less than 57-58 for 24 hours + before removing clamps.
So I'm curious as to what may have gone amiss. Some kind of odd glue defect is, to my knowledge, unlikely but never say never. (But if that, why are the rest of the joints strong and intact?) Do some of those exotic woods "ooze" some strange residual oil that may have interfered with the glue? Or, entirely possible, did I just do something dumb? Any suggestions or insights? Thanks in advance, and Merry Christmas or whatever Season's Greeting you prefer!
Marty