CTC Dual- great results after several essential Mods...

[noiseboy72]

Nice list!
I would add to essential mods moving the X-Axis wiring loom, as it is a major failure point on these machines. It bends over just a few inches and will fail after a few hundred hours. Let it hang down, or as you have done, put it in a cable guard flexing from the base of the machine.

I personally use Buildtak and find that all common filaments adhere well to it, including ABS, PLA, Ninja etc. I agree with replacing the heated bed thermister, but my extruder units were OK, being just a few degrees out at operating temps.

Pulling the belts too tight can add too much friction to the system and actually make things worse, as the motors take a moment to overcome the inertia and this causes accuracy issues. Nylon drive cogs and a reasonably tight set of belts is fine. Just make sure you get the tension on both Y Axis set ups the same. This is the main cause of problems, with one side moving slightly before the other.

I have also added LED lighting and a 2nd spool holder, along with lengths of tubing and positioners, a new mount for the top of the extruders to reduce cable stress and a sprung extruder setup for bother extruders. I found I did not require an adjustable system with any of the filaments tried so far.

Side and top covers will also help with temp consistency and help to prevent warping.