I'm trying to hang some kitchen wall units which have those nifty adjustable hangers which hang on steel brackets screwed to the wall.
The trouble is the wall is made of random yorkshire sandstone, covered by less than an inch of plaster. Judging by other walls where the stone is exposed, the blocks are up to a foot wide and high.
Trying to drill 7mm rawlplug holes in the stone with my domestic hammer drill and a normal (new) masonry bit gets nowhere at all. After a few minutes, the tip of the bit is completely worn away and there's no hole in the stone! I've tried a pilot hole with a 4mm bit, this is no better.
Seems i have two options: (1) get a better drill/bit, or (2) take a large amount of plaster off and look for mortar joints to attach some kind of batten, then re-plaster.
Option 2 sound horrible, so can anyone tell me how to drill the stone? Do I need an SDS drill or something?
Many thanks Phil.
The trouble is the wall is made of random yorkshire sandstone, covered by less than an inch of plaster. Judging by other walls where the stone is exposed, the blocks are up to a foot wide and high.
Trying to drill 7mm rawlplug holes in the stone with my domestic hammer drill and a normal (new) masonry bit gets nowhere at all. After a few minutes, the tip of the bit is completely worn away and there's no hole in the stone! I've tried a pilot hole with a 4mm bit, this is no better.
Seems i have two options: (1) get a better drill/bit, or (2) take a large amount of plaster off and look for mortar joints to attach some kind of batten, then re-plaster.
Option 2 sound horrible, so can anyone tell me how to drill the stone? Do I need an SDS drill or something?
Many thanks Phil.