JG Aurora A3 x belt tensioner

thingiverse

X axis belt tensioner for the JG Aurora A3. Attaches to the right side of the printer, as shown in the picture. It fits like a gem, and works just as well. It can get your x axis belt tight, probably too tight. You actually need to put the parts on a certain way, with the thicker side to the right when mounting it, otherwise you should notice it doesn't fit quite right. You need your own screws and nuts for this, but it should be good with 2*20mm M3 screws. The worst part about this if you're using a JG aurora A3 is that if you want to use the parts that are already included with the printer, such as the bearings, you have to literally take off the entire x-axis just to take out a single screw, and then put it back on, just because of a few millimeters. EDIT: I've noticed other designs, and have modified mine to have an aligner so that the idler doesn't move to one side and chafe the belt against the x axis