The porcelain or ceramic soup bowl is worth $15. **

An immersion heater can be safely placed in a metal container, as long as the metal is non-corrosive and can withstand the heat generated by the heater. However, it is not safe to place an immersion heater in a plastic container, as the heat can cause the plastic to melt or release harmful chemicals. It is important to always check the manufacturer's guidelines and recommendations for the specific immersion heater being used to ensure safe and proper usage. **

Power lock, form lock, and material lock are terms commonly used in the context of 3D modeling and design software. Power lock refers to the ability to lock certain aspects of an object's properties, such as position or rotation, to prevent accidental changes. Form lock allows the user to lock the shape or form of an object, ensuring it remains unchanged. Material lock is used to prevent alterations to the material properties of an object, such as color or texture. These features are useful for maintaining design consistency and preventing unintended modifications. **

No, a door lock cannot lock itself. A door lock requires manual action, such as turning a key or pressing a button, to engage the locking mechanism. It is designed to be controlled by a person and cannot lock on its own. **

To unlock the child lock on a ceramic hob, you will need to locate the control panel. Look for a button or a combination of buttons that are specifically designated for unlocking the child lock feature. Once you have identified the correct button or combination, press and hold it for a few seconds until the child lock indicator light turns off. This should unlock the hob and allow you to use it as normal. If you are unsure about the specific steps for your ceramic hob, refer to the user manual for detailed instructions. **

A lock can be attached to a wooden box by first selecting a suitable lock that is compatible with the size and thickness of the box. Then, a hole can be drilled into the box to accommodate the lock mechanism. The lock can be secured in place by screwing or bolting it onto the box. It's important to ensure that the lock is properly aligned and securely attached to the box to provide effective security. **

To remove melted plastic from a ceramic glass cooktop, start by turning off the cooktop and allowing it to cool completely. Once it's cool, use a plastic scraper or a credit card to gently scrape off as much of the melted plastic as possible. Then, apply a small amount of ceramic cooktop cleaner to the affected area and use a soft cloth to gently scrub away any remaining residue. Finally, wipe the cooktop clean with a damp cloth and dry it thoroughly. Avoid using abrasive materials or harsh chemicals, as they can damage the cooktop surface. **

If you are unable to remove the metal from the door lock, you may need to call a professional locksmith to help with the situation. Attempting to force the metal out on your own could potentially damage the lock further. A locksmith will have the necessary tools and expertise to safely extract the metal without causing harm to the lock or door. **