Place the stones and build a huge tower. You want to 3 high and face downwards so as to maximize your placement speed and prevent blocks from breaking the pattern.
EDIT: Oh, this also works out to 450 cubits / hour (assuming for level 50) if that’s what you’re after.
Yes I have been doing this but now that its public knowledge it kinda breaks down the dispersion of unique character grinds. This will probably be somehow nerfed now. Sometimes public knowledge is not a good thing.
I’ve reported that bug on the issues thread. Once fixed (if that even is a bug) it will not impact the XP from this approach too much. The main contributors to this approach are:
How much XP you get for placing a block
How quickly you can place blocks
Nerfing either of those should reduce the effectiveness of this approach.
I’m not saying I haven’t used this method either, because I have in the past, and I know it works even without it. There is a noticeable increase to XP gains on characters without zeal using this method though.