The first 4 weeks it worked quite well and we were thrilled. But with each use, the part was leaking. Particularly unpleasant: you can still so firmly dranschrauben the container with the boiling water, turning over to run a 100 ° C water always splashes on the fingers !!! What are for pain and how your hands look afterwards, can certainly imagine everyone, so literally hands off of it !!!
And even if we adhere exactly to the amount of cooling water and the cooling times, there is always a different final temperature out here. As if the thing had its own life ... We are now working again with the classic method: boiled and cooled water to mix with boiling water.