This a remixed version of the PRINTBED_GUIDE for Elegoo Neptune 3 pro by user 'x'. x's version works well but clashes with Bobbylebob's scrap bin (https://www.printables.com/model/456408-elegoo-neptune-3-pro-scrap-bin).
My model is a modified version that replaces the left guide by being placed to the right of the cable connector to the bed.
This allows correct alignment of the build plate using the original right corner attachment (to align left-right) and this guide placed on the back of the bed (to align back-front), without clashing with the scrap bin. Added benefit is additional surface area to attach to the bed with double-sided tape.
You will need to print this model and x's original right corner guide for the full arrangement.
https://www.printables.com/model/427555-printbed_guide-for-elegoo-neptune-3-pro/comments
The author remixed this model.