A dried-out and hollowed bottle gourd can be engraved on the S1 40W! To do so, lay the gourd on the honeycomb tray and use a towel to support it arond its edges and cushion the gourd so it will not move. Then, select the settings for kraft boxes (engrave) and voila! I used a drill to cut the hole (didn't want the laser to cut through both sides of the gourd).