I'm three days into Blender (and loving it!) so please don't be too harsh. For my small project I decided to create a lightbulb and I'm struggling with the base. My goal was to model a screw thread contact by subtracting a spiral from a cylinder, but I simply can't make it work.
I know this modificator is funky, but still I just don't get what's going on here. I would highly appreciate any help with where to look at.