Rebuilding my CNC with T Slot aluminum and Fully Supported Linear Rails Part 2

I have been rebuilding my CNC with T Slot aluminum and Fully Supported Linear Rails.  Now I am testing it with a Laser to see its accuracy.  I built my own laser by buying the laser, the housing, the heat sink and the controller separately.  Its a 2 watt laser but the power is throttled back to just burn the material.

Here is the video on youtube:


The accuracy is greatly improved!  The X axis used to have some play in it but now it is right on the money.

The fan power pin on the laser controller is backwards from all of the other connectors.  You will need 5-9 volts on the analog connector to turn the laser on.  The blue trimmer sets the laser power.

How much has the continuously supported rails improved the CNC?  Check out the next two pictures for before and after accuracy.  Pay particular attention to the right side of the R and D.

After upgrade result: