HAKKO T12 DIY KIT Review

Many people use these cartridge irons and are happy with the results, so I decided to give it a try myself.
The item on eBay: http://www.ebay.com/itm/Digital-Soldering-Iron-Station-Temperature-Controller-Kits-For-HAKKO-T12-Shell/162424805503?ssPageName=STRK%3AMEBIDX%3AIT&var=461448276281&_trksid=p2060353.m1438.l2649
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