Review on 🔧 Weller 7874B ESD-Safe Aluminum Desoldering Pump: Manual, Improved SEO by James Holker

In short, if you're trying to desolder MECHANICAL KEY SWITCHES, save some money and buy an Engineer sucker instead. It will not work. The plastic tip is too big and heavy to desolder the keyboard board. There is always a gap between the tip and the solder, so when you let go of the plunge tool, air will get in and there will still be plenty of solder in the through hole. I tried covering the entire switch contact with the tip, but the metal pin in the tip connected to the plunger (to clean clogged solder) would hit the switch contact. big flat head) Was going to give it 2 stars but other than that it might work fine. Build quality is good; One star deducted for a design flaw in the cleaning needle, which would have worked if it had been a little shorter!