Anet A8 X-Idler Mounts

I designed these idlers to fit my needs. They are, for the most part, the same as the original idlers that came with the kit.
The major reason in creating these was to ensure the correct distance between the two ilders in relation to the guided rods.

Assembly instructions:

• Make sure both X-guide rods are 436mm in length.
• For easier insertion I recommend burring the end of the 436mm guide rods first. This makes it easier to insert them into the idlers.
• Due to tolerances in the print I also recommend using an 8mm drill to smooth the holes on the idlers. Only one careful pass is necessary. The rods must still fit snugly!
• Insert the 2 rods in the left idler until they reach the end.
• Mount the completely assembled extruder to the guided X-rods.
• Carefully mount the right idler to the guide rods until it reaches the end.
• Now you can mount the whole extruder assembly with ilders and X-guide rods to the Z-guide rods.

I've also included an X-idler tensioner. I thought this solution was a great idea to tension the belt : http://www.thingiverse.com/thing:1683070
You will need 2 x M3x25mm screws and 2 x M3 nuts to mount the tensioner to the right idler.

The disc is for straightening the threaded shaft should it be off center and doesn't freely go through the top frame hole. To make corrections you will need to sand the disc to the appropriate angle for correct fit.

I also recommend that the linear bearing be positioned in the center of the idler. For this I created a bolt tool that can be used to push the bearing all the way in until the bolt tool is even with the idler surface.

These idlers are not a must have. Print them out if want to do some small improvements.

Please let me know if you have a problem with the design so I can improve it if necessary.

Also please post a picture with comments if you have made one.

Thanks.

Leo

I've added a second version of the left motor idler. It now has a channel for the X-stop cable.

Version 1.1 of both idlers. The X-stop switch has been re-positioned making it easier to lay the cable behind the idler. Some small modifications were also made.