PVC (Polyvinyl Chloride) and CPVC (Chlorinated Polyvinyl Chloride) are both versatile plastic piping materials. The key difference lies in the chlorination process. CPVC undergoes an additional chlorination step, making it more resistant to temperature and corrosion, allowing it to handle hotter water than PVC, which is suitable for cold water applications only. PVC is generally more flexible and easier to install but has a lower temperature threshold. CPVC's increased temperature and chemical resistance make it a better choice for hot water lines and industrial applications where exposure to harsh chemicals is possible. Each has its applications, with PVC often used for drain lines and sewage applications, while CPVC is preferred for hot water supply.

Making quilting frames from PVC is an affordable and customizable option for enthusiasts. Start by deciding the dimensions of your frame, which typically could be 3x3 ft for a manageable size. You'll need PVC pipes (1.5-inch diameter is sturdy and common), four PVC elbows, and four T-joints for basic frame construction. Cut the PVC pipes to your desired length using a PVC cutter or saw for the frame's sides and four legs. Assemble the frame by connecting the pipes with the elbows to create a square or rectangle, and use T-joints at each corner to attach the legs, ensuring it stands firm. The beauty of PVC frames is their modifiability; you can adjust the size or disassemble them for storage. For the quilting surface, stretch and secure the quilt fabric over the frame, using clamps or sewing the fabric onto the PVC for a taut workspace that facilitates easier stitching.

There is a density of 4.506 g/cc in 20C Titanium. The weight depends on the size and type of titanium used.