I have made a little progress with the machine today. I worked out that I really needed heat sinks and fans for the Geckos as per the manufactures instructions for currents over 3A. I was told a little while ago that the steppers on the Mirac draw 3.5A under load (I also found out they run at 38V). I purchased 2 of these http://uk.rs-online.com/web/search/s...duct&R=158-556 heat sink and fan assemblies and have fitted them to the Geckos. I removed the slave board and then mounted the heat sinks to the large plate of aluminium where the slave board was.

I had to order 5 C15 Dual Relay boards from CNC4PC. They will be used for enabling the spindle and tool post, running the spindle and tool post in forward or reverse etc
It seems that the spindle and tool post are powered from the motor controller/inverter together and 24V relays are required to turn the contactors off and on to turn the motors off and on. Theres speed control and an encoder for the spindle but doesn't seem to be anything for the tool post other than a DC brake. I'm guessing that the tool post uses a worm drive and runs at a set speed and you just have to time how long you run the motor to get to each tool.

I'll post some pictures later on.