==== Introduction  ====
One thing is certain, if you're doing SMT, you're doing rework. So having the right rework tools will save you tons of time, frustration and money. We try to aim for about 90% yield off the pick and place (or better) and repair the rest for a total aim of 95% or better. The first tool you'll want to invest in is a really good soldering iron. 
==== What we use  ====


We originally were big fans of Weller irons and used them in school but when it came time to stock the Adafruit lab we decided to go with a **Metcal MX-500 **on the recommendation of a friend. It was a good recommendation! Metcals are really heavy, durable and heat up ultra fast. 

[[http://www.ladyada.net/images/smt/metcal.jpg|{{  http://www.ladyada.net/images/smt/metcal_t.jpg?nolink&500x333  |}}]]



They're easy to switch tips, and can power two different soldering stations (we use a hot tweezer on the 'alternate' station). The wand is light and easy to grip. 



The only weird thing to watch for is that the temperature is set by the tip, not the station. The station only has an on-off switch. This can be good when you're using only one type of solder, say leadfree (700 degree F tips) or lead (600 degree F tips) but can be annoying if you use both - although we suppose you can just go with the hottest tips. 



Metcals are a little pricey but you can pick one up used on ebay for around $200 (thats what we did)


==== Soldering tips  ====
[[http://www.ladyada.net/images/smt/metcaltips.jpg|{{  http://www.ladyada.net/images/smt/metcaltips_t.jpg?nolink&500x340  |}}]]

The nicest thing about the metcal is the wide assortment of tips available. They're a snap to swap - takes only a few second of pulling the old tip out and pushing in a new one.

For general thru-hole we like the screwdriver tip **STTC-137P** (shown on the wand)

For soldering FPCs or reworking a long row of pins, the **SMTC-061** (all the way on the right) is very handy

For fine pitch rework we use the **STTC-122** (second from the right)

We also like the two long 'hard to reach areas' tips** STTC-107** and **STTC-140**. Great for getting underneath microSD holders and miniUSB connectors.

We also got a hoof tip **SMTC-1147** (second from the left) but haven't used it yet since we don't do drag soldering so much