Hi Matt,
There are lots of options, and what's best for you will depend on what else comes across your bench. I'm a member of a hackerspace with all of these on the wall and more, so I have personal experience with all of the below:
I suspect this is the Radio Shack tool Brooke refers to, it's a solid performer and dirt cheap, but the jaws are too thick for some of the smaller stuff (JST's and the like):http://www.ebay.com/itm/291470824600
Slightly more expensive, but noticeably nicer, are these, all of which have appropriate nests for what you're doing, and the Engineer models range down to smaller stuff in case you work with JST connectors, etc:http://www.adafruit.com/search?q=crimper&b=1
Towards the larger end, these start down at the size you're working with, and range way up to automotive-style terminals for ECU harnesses and stuff, these are what I personally reach for most of the time:http://www.bmotorsports.com/shop/product_info.php/cPath/111_112_170/products_id/364
Also, George's suggestion of the AMP Service Tool is a solid choice if you can find one. $50 is a bit steep but it's worth keeping your eyes out at garage sales and pawn shops.
-Nate B-
George Dubovsky  wrote:
>                 Hi Matt,
> 
> Any of the AMP Service Tools - I have the I and II - will work. Positions A
> and B (for the conductor and the insulation respectively) on Service Tool I
> or E and B on Service Tool II will work nicely. I suspect there are lots of
> other "generic" crimpers that will do the job as well. Heck, for just one
> connector, needle-nose pliers, a good magnifier, a soldering iron, and a
> dictionary of curse words will suffice... ;-)
> 
> Good luck.
> 
> 73,
> 
> geo - n4ua
> 
> On Mon, Jun 8, 2015 at 6:29 AM, Matt Robert <matt.robert@gmail.com> wrote:
> 
> > Hi Guys,
> >
> > I am currently in the process of completing my Thunderbolt project and I
> > need to find a suitable crimper to attach wires to the pins that go inside
> > the power connector.
> >
> > The only reference I can find is on this page here (
> > http://www.prc68.com/I/ThunderBolt.shtml) that talks about the official
> > Molex tool which is scarily expensive, and the page also mentioned a
> > Radioshack tool that I can't find any further details on.
> >
> > Can someone please point me in the right direction of a suitable crimper
> > for the Molex 538-16-02-0103 pins.
> >
> > Cheers,
> > Matt
> > VK2LK
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