Each of our glasses is mouth-blown and handmade. The process begins by blowing liquid glass into a mould: the glassblower puffs air through a long, thin pipe to expand the glass into the desired size and shape, while carefully rotating, inflating and swinging the pipe to keep control over the temperature and incorporate air into the glass. The finished pieces are then placed to cool down at a safe temperature. Glass that is not properly cooled can be dangerous as it may shatter due to thermal stress. After this, a laser cuts the rim, and a wet coarse-grit grinding disc grinds down the sharp edges. The top rim is then baked to secure a smooth mouth rim on all drinking glasses. Every Ripple Glass is carefully cleaned three times before the final quality check. As every single Ripple glass is mouth-blown, each piece is unique and none are 100% identical, as the glassblower influences the final result through the amount of glass and air pressure he or she uses during the blowing.