Too Hard to scroll?

[Capt Weasel]

Was cutting a dragon pattern out of some 1/2" oak given to me. The guy joined 2 pieces together and bisquit them. I noticed that one side cut real smooth and good with no burn. But the other side was a royal pain. No matter what blade I used, what size blade, what feed rate or anything it burnt up blades. It eat up my FD-SR 5's in no time no matter what I did and I know it wasn't the blades fault. It burnt the wood too, or shall I say darkened the edge. The other side was nice, smooth and pink. The pain side was brownish and glassy. I tried everything but to no avail. The face sides seem to match but end grain ends have a definate color difference, brown vs. pink.
Is some oak ,or others, just to hard to scroll with and not worth the trouble? I'm beginning to wonder if I didn't just waste a day and a X-mas present. I'll know next time though, no jointed wood from 2 different pieces of lumber

[jttheclockman]

You can get that in any species of wood.

[lucky788scroller]

I do know burr oak is extremely hard,I am guessing at least as hard as the hardest maple you could ever get.It does scroll,but it takes lots of patience. It has pretty grain,but I cant see it getting confused with red oak.Each tree has its own density.