CPVC glue, also known as solvent cement, is specifically formulated for use with CPVC pipes and fittings, offering a unique chemical composition tailored to withstand higher temperatures compared to standard PVC. While CPVC glue can technically create a bond when used on PVC materials since both are types of plastic, it's not recommended. The reason lies in the differing thermal properties and potential chemical incompatibility, which might not provide the desired strength or reliability for PVC applications. For optimal results, it's advisable to use the glue that matches the material you're working with: PVC glue for PVC materials and CPVC glue for CPVC materials. This approach ensures the integrity of the plumbing or any project you're undertaking, reducing the risk of leaks or failure.

Polypropylene, a popular polymer used in various applications like outdoor furniture and rugs, does experience fading when exposed to the sun over time. This is primarily due to UV radiation, which can break down the chemical bonds in the material, leading to a loss of color. Manufacturers often add UV stabilizers to polypropylene products to mitigate this effect, enhancing their durability and color retention. However, even with these stabilizers, prolonged exposure to sunlight will eventually cause fading. For items expected to endure significant sun exposure, seeking those specifically treated for UV resistance can extend their lifespan and maintain their appearance longer.

Undoing yarn, commonly known as "frogging," involves carefully unraveling your knitting or crocheting work to correct mistakes or repurpose the yarn. Start by removing your project from the needles or hook. Find the end of your yarn and gently begin to pull, unraveling your stitches. For knitted projects, it's easier to unravel row by row. If your yarn starts to kink, pause to untangle. Once completely unraveled, roll your yarn into a ball to prevent tangling. Frogging requires patience and care to avoid damaging the yarn, ensuring it can be reused for future projects.