I've been trying to mount a kitchen cupboard to a concrete wall by drilling a couple of holes and using rawl plugs. I can drill one of the holes fine, but the other hole refuses to turn out neatly. It feels like the drill hits something hard and instead of going any deeper, it starts to expand the hole. I have tried various places near my original hole and there seems to be the same problem. I think with a little work I might be able to get through it, but the problem is that I have more or less used up all of my potential drilling sites.
Is there anything I can fill the holes with (if necessary, after expanding them), which will be sturdy enough to drill into and support the unit? The holes are not massive; they are drilled with a 6mm masonry drill bit, but their edges have been somewhat eroded, so a rawl plug doesn't sit safely inside.
Is there anything I can fill the holes with (if necessary, after expanding them), which will be sturdy enough to drill into and support the unit? The holes are not massive; they are drilled with a 6mm masonry drill bit, but their edges have been somewhat eroded, so a rawl plug doesn't sit safely inside.