Instructions:
1. Print model 100% material, preferably all walls/perimeters
2. Use 2x M7 bolts, fully threaded, at least 50mm long with 2x M7 Nuts, and insert in the holes.
3. Place Y Gantry in jig without Y axis rod, according to photo.
4. Tighten M7 bolts until desired fitment.
The author remixed this model.
This is a tool jig extractor for the 8mm smooth rods on the Ender 3 NG.
In assembly, when aligning the Y Gantry the pair of smooth rods may be pushed in too far.
This aims to push the smooth rods back out, with fine adjustment, so that the proper alignment can occur.