I've had this tool for about four weeks, and I've already used it to desolder over 1000 components, mainly keyboard switches and LED's. Using this tool is 10x faster than using separate soldering iron and sucking tool.After desoldering about 200 solder joints, the tool becomes clogged and needs to be cleaned out. I followed another reviewer's advice, painted a light coating of dielectric silicone lubricant inside the collection barrel, and that has made cleaning old solder out of the tool incredibly easy; most of it just falls out with a light tap or poke. Every now and then, I apply a thin new coat of lube with a cotton swab.It is very important to clean out the tool before turning it off, while it is still hot. Dump out the glass tube, check the filters, and use a poker to clean the heating element and nozzle. If solder cools in the neck of the heating element, you will have a difficult time getting it out again. Not to say that it will be impossible, but you will have to be forceful. If solder does become stuck, turn the heat up all the way and give it some time before using a poker tool.**Finding replacement parts**The most annoying part of this tool has nothing to do with its function, but rather finding replacement parts. You can find nozzles on Amazon, with varying success, but they are less expensive and more readily available elsewhere. The tip of the one included nozzle is 1.0mm, which is good for most applications, but there are also 1.5mm and 2.0mm nozzles available. For larger pins, you will likely find it easier to use one of the larger nozzles. I've found that the 2.0mm nozzles work best for pins of keyboard switches.As for filters and a replacement glass tube receptacle, I couldn't find any marketed for the S-993A, anywhere. Fortunately, the parts for Hakko's desoldering tool fit the S-933A perfectly.Hakko's A1611 filters are a perfect replacement for the large filter in the S-933A. In fact, they work SIGNIFIGANTLY BETTER than the filters included wi
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