Welcome to the forum @pke.
Marble and Granite are two different stones, with different chemical compositions and hardness. That being said, they both work well in the Glowforge.
Marble:
Granite: Search results for 'granite' - Glowforge Owners Forum
Welcome to the forum @pke.
Marble and Granite are two different stones, with different chemical compositions and hardness. That being said, they both work well in the Glowforge.
Marble:
Granite: Search results for 'granite' - Glowforge Owners Forum