I have a small hairline crack in the top piece of my GVG. Before I got the arc, I was experimenting with a few different lighters, and I think I cracked it when I used a hobby torch – much too powerful!

Also, some of us (such as myself) lose their depth perception almost immediately when inhaling DMT. Combine that with a bit of farsightedness and it can be hard to be sure the lighter is properly centered over the ceramic diffuser. That’s the main reason I always try to get a full dose in one hit.