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No, you should not put a hot pan or pot directly on a quartz countertop. While quartz is generally heat-resistant, the resin binders used in its manufacturing are sensitive to extreme heat. Placing a hot pan on the surface can damage the resin, leading to discoloration or other cosmetic issues. If the heat exceeds 150 degrees Fahrenheit, it can cause permanent damage, such as burns or even cracking. To protect your countertop, always use trivets or hot pads.

Yes, Corian® and other solid surface countertops can be cut with standard woodworking tools like a circular saw or a jigsaw, but using the correct blade is crucial for the best results.

The recommended blade is a tungsten carbide-tipped blade, often called a solid-surface planer or triple chip grind blade. This type of blade is hard enough to cut through the material effectively. For a jigsaw, a fine-tooth down-cutting blade should be used.

It is important to note that a diamond blade is not necessary. Diamond blades are designed for harder materials like natural stone, concrete, or brick, and Corian is not a natural stone.

Using blades designed for wood is not recommended as they can cause microfractures that weaken the countertop's edges. While a tungsten carbide blade provides a much cleaner cut, the resulting edge will still be rough and must be sanded and smoothed to prevent microfractures from developing over time.

Onyx countertops are naturally porous, absorbing liquids and staining easily without proper care. Regular sealing every 6 to 12 months is essential to keep them looking their best. Daily maintenance includes wiping up spills immediately and avoiding harsh cleaners or acidic substances that can etch the surface. 

A minimum overhang of 10 to 12 inches is generally recommended for countertop or island seating to provide enough legroom. For increased comfort, an overhang of 15 to 18 inches is ideal, allowing for more space and a relaxed experience. However, a 10-inch overhang can be sufficient in certain situations, such as for bar-height countertops, when using small stools, or in smaller kitchens where space is limited. Taller countertops may also require less overhang than shorter ones. Ultimately, you should consider your specific needs for legroom and measure to ensure the overhang fits comfortably within your kitchen's layout.