Yep, you guessed more Spalted Maple. This is my first ... what I would call a vase HF. With this I tried a collar out... don't know if I went through the best process of making one... but it came out okay. This is 5 1/2" high and 4 3/4" in diameter. I did much better in keeping the thickness this time at 1/4", but then again I wasn't fearing a blow out.