Epoxy does not "melt" in the traditional sense like many thermoplastics that have a clear melting point and can be remelted multiple times. Epoxy is a thermosetting polymer, which means once it has cured (hardened after mixing its components), it cannot be melted down again for reshaping or recycling. This curing process is a chemical reaction that creates an irreversible bond. If epoxy is exposed to very high temperatures (above 200-300°C, depending on the formulation), it does not melt but rather decomposes and burns, releasing potentially harmful fumes. For applications requiring reworkability, alternative materials such as thermoplastic adhesives might be more suitable.

Polymer coating a 3x3 puzzle cube involves applying a polymer solution that enhances the cube's outer surface for better durability, color stability, and smoother operation. Start by disassembling the 3x3 cube to separate its parts. Clean each piece with isopropyl alcohol to remove grease and dirt. Next, prepare the polymer solution as per the manufacturer's instructions, usually involving mixing a base with a hardener. Using a small brush or a spray gun, apply the polymer evenly on each piece. Allow the pieces to cure as recommended, often 24-48 hours, in a dust-free environment. Reassemble the cube after the pieces are fully cured. Be aware to not overly coat the contact surfaces to avoid impairing the cube’s twisting action. Experiment on a less valuable cube first to perfect your technique.

To remove pills from yarn, especially important in maintaining the aesthetics of knitted or crocheted items, gently use a fabric shaver or a pill remover designed for delicate fabrics. Ensure the item is laid flat on a surface to avoid stretching or damaging the yarn. Moving in a single direction, lightly pass the shaver over the surface to lift off pills without pulling on the yarn. For a manual alternative, a small pair of scissors or a lint roller can be effective—carefully snip pills away or use the sticky surface to lift them. Another method involves lightly running a comb or a specifically designed de-pilling comb through the yarn. Regular maintenance, including proper washing and storage, helps prevent pilling. Avoid abrasive surfaces and friction during wear, which contribute to pilling. Choose high-quality yarns that are less prone to pilling for future projects.

To remove pills from yarn, especially important in maintaining the aesthetics of knitted or crocheted items, gently use a fabric shaver or a pill remover designed for delicate fabrics. Ensure the item is laid flat on a surface to avoid stretching or damaging the yarn. Moving in a single direction, lightly pass the shaver over the surface to lift off pills without pulling on the yarn. For a manual alternative, a small pair of scissors or a lint roller can be effective—carefully snip pills away or use the sticky surface to lift them. Another method involves lightly running a comb or a specifically designed de-pilling comb through the yarn. Regular maintenance, including proper washing and storage, helps prevent pilling. Avoid abrasive surfaces and friction during wear, which contribute to pilling. Choose high-quality yarns that are less prone to pilling for future projects.