I've drilled 3 6mm holes in a wall, about 30cm away from each other. They were meant to be vertically aligned but the measurements were off and it's on about a 5-10 degree slant. Because of this I need to start again (or mostly start again).
I had initially thought that I could keep the top hole, and just drill 2 more underneath but I think that the relatively short distance combined with the relatively small angle mean that this hole will be too close to the existing one and it will end up as one wide hole.
Is there a recommended distance between holes in plaster (either officially or anecdotally) so that, if I do start again completely, I can keep the holes as close to their original locations as possible.
Alternatively, is there a filler I can use (bought off the shelf) to fill these holes that would make them blend in with the existing wall (which I assume is plasterboard) and I could drill wherever I needed to?
Edit (in response to comments): The holes are being drilled to put some mounts for shelves up. The fasteners are just standard wall-plugs (that expand when a screw is inserted to wedge them in place)
Best Answer
For posterity, I'm copying my comments into an answer... hopefully this can help someone in a similar spot in the future. (Though generally speaking, hitting a stud instead of using drywall/plaster anchors is infinitely preferable.)
I can imagine a few possibilities:
If you can flip the shelf standards, you might get a totally different spacing. (Granted, they might only work one way up.)
Next best would be to raise everything by 2 inches. (That's totally anecdotal, btw... I have no evidence that 2 inches is the right number, although @Jack seems to agree.)
If you can't change height, I'd opt for toggle bolts, with the toggle arms vertical.
If you were to do shelving like a hack, you'd just angle both of the standards the same way and it would probably work out.