I have a shop-made box joint router jig. I have used it about 10 times and it gives perfect joints.
Today I made two identical boxes at the same time; one out of quilted maple and one of bubinga.
The bubinga is fine, just like the others. The maple is too tight. I ran it again, but it is still too tight. I ran them the same time on the same jig and same router bit. All four bubinga are fine; all four maple are too tight.
I can't make any sense out of this, except that there is something weird about quilted maple, but I can't imagine what that could even be. The maple is air-dried, but it was dry when I bought it, and has been in my shop for about 4 months.
Anyone make sense out of this?