No EXP when taking Smooth Stone out of Furnace manually.

I put 3 stacks of 64 Stone into my Furnaces, and then pulled them all out, and got no experience points. I had only 1 item equipped to try to mend with Mending 1, and it didn't get anything either. I was also lvl 3, and no experience gained from pulling out 3 stacks of 64 Smooth Stone, manually.