I have the following components I am putting together to use with my TAIG...
$284 - 3 size 23 servo motors from www.kelinginc.net
$353 - 3 geckodrive 320's
$109 - 35v 15amp torroid power supply
$45 - 3 CPU cooling fans & thermal compound
$50 - other items like wire, terminal connectors, crimping tool...
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$841 (first 3 item prices include s/h)
servo motors - When these arrived first thing I did was install the encoders. I was surprised to find out the 2 installation tools needed for the encoder were not included. I had a set from another project so that was not a problem for me. I have not used these motors under CNC control but am impressed by the low sound level and smooth motion when moving my TAIGs x,y,z axis under power of a 6v and 12v wallwort. (6V does not move the Z very well but 12 is plenty)
power supply - the motors are rated 35v, 4 amps continuous with 19 amps peak so this should be plenty for 4 axis even tho I am only using 3.
cooling fans - hoping these will clamp onto the geckodrive or at the very least attach to the drives with little modification. Not the cheapest way to cool but also far from the most expensive. 3 12v fans wired in series also works well with my powersupply.
other items - I am mounting everything to a wooden board (one shipped with my TAIG). For the wiring I will probably do a little soldering but most of the larger wires are connected using crimp terminals.
If I spent about $150 more I could have a nice enclosure and cables that plugged into it but I am taking a more slapped together approach using terminal crimp connectors for the larger wires and screwing the components to a board my TAIG was shipped on =)
The only thing I really have a question about right now is which wire in the parallel port cable is the "common". My assumption right now is that its the un-insulated wire that shows low resistance when I touch one end of my tester to the wire and the other end to the plugs metal case.