Well since you asked about a gun and not a variable watt iron/pencil :I'm looking for a new soldering gun for a pickup swap.
+1. I recently got a CSI Deluxe Station w/Analog Display (CSI-STATION1A) from them and the quality is excellent and at a very reasonable price. Enough juice to handle any guitar-related soldering job.I've had the 2900 from this page for about a year and I love it.
Plus they give you a really nice DMM with it.
Where is the best place to buy a Hakko 936?
A great explanation on a subject that is often overlooked or misunderstood, all to often temperature and heat are thought of as one.... Regardless of the iron, you want temperature control. A 25/40 watt switch, is really not ideal. You want to set it for 600 or 650 degrees and leave it alone. For the back of pots and bridges, you're going to want a large tip. The large tip allows a lot of heat to flow quickly from the iron to the work. The wattage rating of the iron only matters if your tip is large enough to transfer a lot of heat. An iron with a high wattage rating can keep up with a large tip. The temperature control keeps you from overheating things. What you want to be able to do is rapidly bring everything up to the proper temperature and then get off. A tip that it too small will transfer heat very slowly to a pot, never really using the power available to the iron. Most will try to compensate by increasing the temperature. This is exactly the wrong thing to do. You need a big tip with a big flat on it, like a chisel tip maybe.
I guess you mean tips for the 25/40 watt iron--I have 40 and 25 watt irons from RS and have had no trouble finding tips for them.I bought one from Radio Shack that was switchable between 25/40 watts, which I really like. Good luck ever finding replacement RS soldering tips though. I cut off their iron and attached a cheap Weller to the base. People will say "only use a 25 watt on electronics" but IME you need at least a 40watt to solder to the backs of pots.