Water Bottle Stopper

thingiverse

This is a replacement stopper for a "Cheeki" brand stainless steel water bottle/canteen. The threaded section has an inner diameter of 29mm, with the outside of the thread approximately 33mm in diameter and the flange measuring 35mm across. Thread pitch is 4mm. You could scale it for other pressed steel bottles. Note that the thread on the Cheeki bottle is pressed into the steel, which makes it rather vague and coarse. Sigg, Optimus, Brunton, Primus, MSR, Snow Peak, and Kovea bottles all use the Sigg thread, a proper cut thread requiring a stopper with a proper thread profile, not the shallow flat form used on this stopper. The bottle itself is sound but the original stopper broke, revealing a poor design - the inside was hollow right up to the handle, resulting in inner areas in contact with drinking water that are difficult to clean properly. This replacement has a flat end, eliminating any internal parts that need cleaning.