Apparently these plastic spools flip open and shut to dispense and protect the solder wick; just take out the wick and wrap your earbuds around the spool instead.
显然地，这些塑料线轴采用弹性开关来保护焊锡丝，把焊锡丝取出来，然后将你的耳机线缠进去。
3
But, no matter how simplistic this design is, you will still have tosolder copper pipe joints if you want to tap into your existing hot water system.