I acquired another Primus 1020 and also my first Radius 119 and found myself in need of two more shortened Coleman large straight sided globes. This time I decided to try my hand at cutting them myself. I used a diamond coated titanium disk in my trusty Dremel tool. I secured the Dremel in my bench vise, clamped an old block battery to the workbench as a guide, and marked the globe in the burner cage of the lamp. Then I turned on the Dremel at fairly low speed and while turning the globe with one hand, fed a dribble of water from a squeeze bottle onto the cut with the other hand. The disc cut the glass like the proverbial hot knife through butter. It is a rather messy process with the water spraying everywhere and it seems that a lower speed and shallower cut would give a better result.