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Under standard conditions, undermount kitchen sinks require 24–72 hours to fully cure and reach a safe usable state. In most cases, professional installers will recommend: • Wait at least 24 hours before touching the sink. • It is best to wait at least 48 hours before starting a large-volume water test or using it with water.

Countertop sinks, due to their raised edges, easily accumulate limescale, grease, and food residue. Undermount kitchen sinks, with their recessed design, allow dirt from the countertop to be directly swept into the sink with a cloth or scraper.

Undermount sinks are primarily fixed in the following ways: 1. Wrap-around metal brackets (common on stone countertops) 2. Structural adhesive bonding under the countertop (glass glue/marble glue/epoxy resin) 3. Countertop weight pressing structure (some sinks have pre-drilled edges that prevent upward passage) Based on the above reasons: Undermount sinks almost never can be removed upwards; replacement must be done by disassembling from below and removing them downwards.

In actual design and installation, the standard depth of undermount kitchen sinks is typically between 18 cm and 25 cm (approximately 7 to 10 inches). However, this is only a general reference range. The specific choice should be made in conjunction with the kitchen countertop height and the user's height.

4mm setback is one of the most common standards at present and is widely used in most home and commercial kitchens. This size of setback can ensure that the gap between the undermount sink and the countertop is moderate, while also avoiding the situation where the edge of the sink is too protruding.