Understanding PVC pipe sizes doesnt have to be confusing. PVC pipe is extremely easy to build with, however, the sizes of PVC pipe are determined by thier inside diameter, and not thier outside diameter. This can sometimes confuse the inexperience PVC builder and cause frustration when ordering. The FORMUFIT PVC Size Guide makes it simple to determine what pipe size you currently have, or what the best uses of each PVC pipe are. To use the guide, follow these easy steps:
Determine PVC Pipe Size for a Project - another site suggested "Heavier items (Books, video tapes) would require larger size pipe 1 1/2" or so. Normal items such as Holiday Décor and other lighter items could use the smaller pipe sizes 1". It never hurts to go a little big just to be safe."
Love these sewing patterns. These train cases come in 3 different sizes. Each case features a zipper on the exterior, and several pockets and compartments on the inside. Optional piping. PDF download or paper pattern.