Yes, dietary fiber does bulk up stool. Fiber, which is found in fruits, vegetables, whole grains, and legumes, is a type of carbohydrate that the body can't digest. It falls into two categories: soluble and insoluble. Soluble fiber dissolves in water and can help to soften stool, making it easier to pass. Insoluble fiber, on the other hand, does not dissolve in water and adds bulk to the stool. This type of fiber helps to move waste through the digestive system more quickly and efficiently, reducing the likelihood of constipation. By increasing the bulk and softness of stool, fiber can aid in maintaining regular bowel movements and promoting a healthy digestive system. Consuming a balanced diet rich in both types of fiber is recommended for optimal digestive health.

Yes, PVC molding is paintable, but it requires proper surface preparation for the best results. PVC, being a non-porous and smooth material, doesn't allow paint to adhere as easily as wood does. To paint PVC molding, it’s advisable to clean the surface thoroughly and lightly sand it to create a texture for the paint to grip. Priming the molding with a primer made specifically for plastics is essential to ensure paint adhesion and durability. Using a high-quality acrylic latex paint or paints formulated for vinyl materials will yield the best finish. Remember, darker colors can cause PVC to absorb more heat, potentially leading to warping, so careful color selection is recommended.

Isopropyl alcohol (IPA) is generally considered safe for use on PVC (Polyvinyl Chloride) surfaces. PVC is a type of plastic that is known for its durability and resistance to chemicals, including alcohols. However, repeated or prolonged exposure to isopropyl alcohol may cause some degree of damage to the PVC coating over time, particularly if the coating is not specifically formulated to be alcohol-resistant. This damage could manifest as discoloration, brittleness, or a decrease in the mechanical integrity of the PVC coating. It's always a good practice to test the effect of IPA on a small, inconspicuous area of the PVC surface before applying it broadly, especially on critical or sensitive equipment.