The CSpring One is somewhat useful for keeping a ResMed Series 11 filled with water but it has useless holes on the lid that allow dust and debris to fall into the water prior to being pumped into your face. To remedy this I designed up some quick inserts to place in all the holes

Printing recommendations:

• TPU 95A filament (the design requires flexibility so anything other than flexible filament won't work)
• 15% infill
• No supports