The Weller 40 watt SP40/SP40D soldering iron is probably the most used iron in the world.I have gone through 4 or 5 of them over the last decade--eventually the heating element burns out, but this is long after one goes through dozens of tips. Everyone sells the irons (from Home Depot and Lowes to Ace Hardware, etc), but almost none of the vendors sell the replacement tips. Shame on them. Seems to me pretty lame to make customers have to buy a new iron to get a replacement tip. This would be the equivalent of car dealers making you buy another new car to get new tires.So I am glad to see MCM offering these tips, albeit at full retail, no matter how many you buy. Still, it saves me a trip to my local ACE, where I used to have to special order them in lots of 4 or 5 packs at a discount.
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72-6309 - 60/40 Bar Solder
Tenma bar solder is a general purpose solder with a 60/40 alloy content. The bar solder is supplied in the form of a 1 lb. bar. Great for tinning or solder pot applications.
21-1050 - Tube Solder
Tube type dispenser makes holding solder easier 7' of high quality .040" diameter solder 60/40 370°F melting point
MCM is a great company. Very fast service and shipping of Raspberry Pi. Will tell all my friends to buy from MCM