One of the biggest flaws in my opinion of the X5S are the belt pulley mounts, as the load placed on them when the belts are in tension is located in one point on each fixing.
Preparations the key for the rails to run correctly, and lubricating the rails is best done prior to installation.
I reccomend you replace the Z-Axis mount even if you do not intend to use a linear rail.
The frame of the printer is the most important part, and if you get this part of build wrong everything else will go out of whack very quickly. I do not recommend printing certain part for strength and stability reasons.
I keep on getting asked to keep members of Groups on Facebook to keep the upto date with the Customisation of My second X5S. So I have created a special section on our forum to create a build log,
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