What is interesting for me than difference between tips. My observations:1) DS21 (DS701EC / VP801). Tips had bigger hole inside tip to through air.2) DS80. Hole is smaller. I think that it is bad, but 80W is more important with desoldering on multilayer pcbs.On the other hand, a smaller opening means higher air velocity so the solder gets transported to the glass container faster. One of the issues with desoldering irons is clogging where solder cools down in the tube between tip and container. Faster airflow can help mitigate that.Quotethen we have DSX serie (whats difference between DS?)DS desoldering irons use DS series threaded tips. These tend to get stuckDSX/DXV 80 desoldering iron use DX series conical tips. Easier to change the tipsDSX/DSXV/WXDP/WXDV 120 desoldering irons use XDS(L) series conical tips with extended nozzle shaftThe nozzle shaft of the XDS(L) tips extends all the way into the glass container, which should reduce the chance of clogging. And even if it clogs, you can simply replace the tip and you are good to go. It's practically impossible to clog the hand piece itself like was the case with the older DS and DX series.The XDSL tips have a stainless steel liner in the nozzle shaft to further prevent solder from sticking to it.Still, maintenance is key in using desoldering tools. After you are done desoldering, insert the cleaning tool into the nozzle to push any remaining solder or burnt flux to the glass container, regularly empty the container and occasionally inspect and replace the filters.I've used the DSX 120 and WXDP 120 extensively and am very pleased with their performance.QuoteI bought in the past single WXDP-120 gun. What is best way to use it? I don't have external air source so preffer inside station.If you prefer the pump inside the station, you don't have much options: Only the WXR 3 rework station comes with a built-in pump (the WXDP 120 is from the newer WX-series and not compatible with older rework stations like the WR 2 and WR 3M).Weller also offers the WXair, a standalone pump unit that can be combined with the WX 1 and WX 2 soldering stations., Author Topic: Weller WMD-3 soldering station. Questions around tools and compatibility (Read 6190 times) 0 Members and 1 Guest are viewing this topic., Author Topic: Weller and Soldering Stations Questions (Read 7094 times) 0 Members and 1 Guest are viewing this topic..